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Did you know that Iowa is home to a 220-mile stretch of land unlike anywhere else in the world except for China? Running almost the full length of the state’s western border, the Loess Hills National Scenic Byway is a breathtaking mix of large rolling hills, prairie and forest that has been carved into extraordinary shapes by wind and time. The Loess Hills are not only a geological marvel but also a haven for wildlife and outdoor enthusiasts. This region’s dramatic topography offers more than just scenic views, it tells a story of natural wonder and resilience. Join us as we explore what makes this area so unique and how you can experience its beauty firsthand.
The Loess Hills are renowned for their striking beauty and unique ecosystems. Iowa has documented 39 rare plant and animal species inhabiting these hills, including the increasingly scarce plains pocket mouse, the ornate box turtle, the Great Plains skink (a lizard), and the spadefoot toad. The area also provides a habitat for bald eagles and numerous other bird species that either nest in the hills or migrate through each year. Remarkably, the Loess Hills preserve about 75% of Iowa’s remaining native prairies.
Snow Geese take flight in an attempt to start another Snow Goose Tornado.
The spring migration of the Snow Geese at the Loess Bluffs National Wildlife Refuge in Forest City, Missouri, occurs between late February and early April, with peak viewing time being mid-March. The count when I shot this image was over 365,000 Snows.
This region is considered an archaeological treasure with much historical significance. There is evidence of human activity dating back over 12,000 years. More than 800 archaeological sites have been identified, including the Mill Creek settlements from around 900 AD, once home to the ancestors of the Mandan tribe, and the Glenwood site, where approximately 80 earth lodges belonging to the Pawnee and Arikara forebears have been found.
The Loess Hills also play an important role in American History, as the scenic byway follows part of the path taken by the Lewis and Clark Expedition in 1804 on their westward journey and again in 1806 on their return. It was a gateway for westbound pioneers traveling along the Mormon, California, and Oregon Trails, and it later served as a starting point for journeys on the Transcontinental Railroad. What is Loess?
Loess (pronounced "luss") is the German word for "loose" or "crumbly," aptly describing the type of soil found in this area. Loess soils are typically found along the borders of expansive river valleys. Composed of densely packed grains of quartz, feldspar, mica, and various other minerals. The soil was created during the ice age when glacial motion ground up the rocks. The resulting soil is gritty, porous, and lightweight, much like dust or silt. Just as the wind shapes sand dunes, the Loess Hills were formed similarly. Although wind-deposited rock dust, or loess, can be found in many locations worldwide — including other parts of the United States, Germany, Argentina, New Zealand, China, and more, there are only two regions where these deposits have accumulated into massive hills that range in height from 60 to 350 feet tall: western Iowa along the Missouri River, and China's Shaanxi Province near the Yellow River.
The Loess Hills in Iowa are relatively young from a geological perspective, having been formed between 14,000 and 30,000 years ago. They cover about 640,000 acres making them 220 miles long and only about 15 miles wide that their widest point. In comparison, China’s Loess Plateau is vast, nearly the size of Texas, and over a million years old, making Iowa’s loess area much smaller and younger in age. The distinctive landscape of the Loess Hills, marked by steep ridges, is shaped not only by its dramatic topography but also by the unique qualities of its loess soil. Slope inclines here frequently measure between 50 and 75 degrees, a consequence of the soil’s particular engineering characteristics. Made up mostly of coarse silt, loess becomes unstable and loses much of its strength when it absorbs water, often to the point where it cannot support its own weight. In contrast, when the soil is fairly dry, it gains enough temporary cohesion to sustain the striking bluffs and sharp ridges that line the Missouri River valley. These unusual soil traits pose significant challenges for any construction projects, such as roads or buildings. Loess is also highly susceptible to erosion from flowing water. Its tendency to collapse further exacerbates this issue, resulting in severe soil loss and the formation of deep gullies. This area experiences some of the nation’s most severe erosion rates, averaging approximately 40 tons per acre annually. Consequently, streams in the region carry heavy sediment loads, which require continual clearing of drainage systems and stream beds and create adverse conditions for local aquatic life. About the Byway
The Loess Hills route was officially recognized as an Iowa Byway in 1998 and earned the distinction of National Scenic Byway status in 2000. It has also earned national recognition, being selected by Scenic America as one of the country’s top ten scenic routes.
Spanning seven counties, the byway runs from Akron in Plymouth County at the northern tip down to the Missouri state line in Fremont County in the south. Unlike most other byways, the Loess Hills National Scenic Byway offers a variety of roads to explore, each catering to different levels of adventure.
While the Byway Spine and Excursion Loops are very well marked with signage, attempting to drive it without the maps from the official Loess Hills Scenic Byway Guidebook in hand is difficult. Otherwise the guidebook has not been updated since 2014, and has very few working links and many closed business listed. I have attempted to correct that in this article. Many of the County Roads (CR) now have street names, which are in most cases what Google Maps recognizes, so I have tried to list both whenever possible.
Most likely because this guidebook is obsolete, it is almost impossible to find along the route. I have not found a place to order it online either. That link above is the PDF version of the 2014 Guidebook. I recommend printing out the pages you'll need for your trip or downloading the PDF to an iPad on the off chance you can't get your hands on one before starting your drive. I had Wi-Fi for the majority of the time, but it was spotty, depending on the location, so be sure to save the file and don't just plan to access it online. If you happen to visit one of the visitor centers, be sure to ask for the guidebook if you don't see it out. The one I visited didn't have it out with the other tourism brochures, but hidden behind the desk. Driving the Byway
I suggest traveling the byway from north to south, as that matches the directions in both the guidebook and what I have provided here. The byway passes through seven counties.
I found the Guidebook directions terribly confusing and far too wordy to follow while driving, if you are like me, you might prefer the more abbreviated directions that I've added in this article. Plymouth County
Akron, Iowa
Akron is the northern tip of the Loess Hills National Scenic Byway, marking the starting point of this picturesque route as it heads south along Iowa Highway 12. Here, the hills slowly emerge from the level farmland. As you get past Westfield, they will become steeper and more pronounced. Continuing further, travelers will notice the Byway hugging a slim strip of land between the rising bluffs and the Big Sioux River, which forms the border between Iowa and South Dakota.
There is an Information Kiosk on Highway 12 at the Akron City Park on the North Side of Akron. (GPS: 42.8320759,-96.5551262)
Plymouth County Byway Spine
The byway actually begins on the south side of Akron not far from the Casey's Gas Station (80 South St, Akron) on Highway 12.
Ridge Road Loop
FYI: The directions are incorrect in the Loess Hills National Byway Guidebook. You turn off 12 onto C38 NOT C43, but there is a sign marking the turn so it's easy to find.
This is a 12 mile loop on a combination of gravel and asphalt roads.
From Iowa Highway 12 > Left on C38 > Right onto North Ridge Road - 1 mile > Curve left to stay on North Ridge Road > 3 miles after passing Butcher Road - Right on K18 > 4 miles back to Highway 12
In my opinion, K18 isn't very interesting, I recommend turning around when you get to K18 and backtracking to Butcher Road. Just don't turn on Butcher Road when you first see it or you'll miss some beautiful terraced farmland.
Corn and soybeans are the most common crops planted in the Loess Hills, with some of the steeper areas being used for hay and pasture. The farmers here practice terracing and contour farming, using grassed waterways and perennial vegetative strips to help minimize erosion. While this is done for purely practical reasons, the patterns created are beautiful.
Butcher Road Connection
Butcher Road is a gravel road that runs through the center of the Ridge Road Loop.
A little more than 5 miles south of Westfield on Iowa Highway 12 > Turn left on Butcher Road. Plymouth County Byway Attractions
Broken Kettle Grassland Preserve
The Broken Kettle Grassland Preserve stands as Iowa’s largest stretch of unbroken prairie. Home to a flourishing bison herd now numbering more than 200, the landscape is a patchwork of sweeping grasses, occasional valley trees, and teems with native prairie plants, fascinating insects, and rare wildlife, including the prairie rattlesnake, the bobolink, and the Great Plains toad.
While visitors are invited to experience this remarkable ecosystem, it’s important to know that there are no established hiking or walking paths, nor any visitor facilities. Access may be restricted in certain sections due to bison grazing or ongoing land management. You can take in views of the preserve from Highway 12, as well as from nearby routes like Butcher Road and County Road 34. Five Ridge Prairie State Preserve - 15561 260th St, Westfield
Five Ridge Prairie is spread across 960 acres, this park is one of the largest undeveloped tracts in the Loess Hills. As you explore, you’ll notice a shift in climate — from sunbaked, breezy prairie hilltops to the shaded woodlands below, where the air grows cooler and more humid. Trails vary from gentle walks to rugged, challenging hikes. FYI: 260th Street is an Unimproved B Road, this dirt road is impassable when wet.
Woodbury County
Woodbury County Byway Spine
Enter Woodbury on Hwy 12 near Stone Park Loop > Take I-29 from Exit 151 - 10 miles > Leave interstate at Exit 141 - D38 - 7 miles > SE on D25 > At Smithland - Right on L12.
Stone Park Loop
The Stone Park Loop is the 3 mile paved drive through this 1600-acre park. It's a beautiful wooded park. Be sure to watch for hikers on the road.
Stagecoach Trail Loop
Begins in Smithland > Head west on Hwy 141 > Take K67 - South.
Watch for traces of a stagecoach trail. Smokey Hollow Loop
Begins in Smithland > Head north on Hwy 31 > At Oto - Left on 290th - 3 miles > Left on Knox Ave > Left - Old Hwy 141
Woodbury County Byway Attractions
Stone State Park - 5001 Talbot Road, Sioux City, IA
Stone State Park sits at Sioux City’s northwest border, tucked into the scenic Loess Hills. Covering 1,069 acres, the park features wooded areas and ridges capped with prairie, providing a sanctuary for local wildlife right next to the city. From the overlooks at Dakota Point and Elk Point, visitors can enjoy views spanning three states.
Dorothy Pecaut Nature Center - 4500 Sioux River Rd, Sioux City, IA
In the center of the Loess Hills, the award-winning Dorothy Pecaut Nature Center is dedicated to celebrating this unique landscape. Visitors can explore interactive exhibits, observe live reptiles and fish, stroll through a butterfly garden, and experience a walk-through display that reveals what life is like beneath the prairie.
Sioux City Railroad Museum - 3400 Sioux River Road, Sioux City, IA
Once home to the Sioux City Engine Terminal and Car Repair Shops of the Chicago, Milwaukee, St. Paul, and Pacific Railway, commonly called the Milwaukee Road, this site has since been transformed into the Sioux City Railroad Museum.
the height of World War II. It employed 560 workers, overhauled 35 steam locomotives, and serviced over 70 trains a day. By the mid-1950s, the staff was reduced to 10, and the Roundhouse was scaled back from 30 stalls to six. Finally, with the conversion to diesel engines, the shop was obsolete. The Milwaukee Road filed for bankruptcy in 1977 and then became a farm machinery salvage company in 1981. In 1995, the Siouxland Historical Railroad Association acquired the property and began restoration work converting it into a museum.
Recognized as the Milwaukee Railroad Shops Historic District, the location was added to the National Register of Historic Places in 2018. The museum is housed within the former Milwaukee Railroad roundhouse, and features Sioux City’s historic steam locomotive GH 1355 and Tender 1451 (both National Register Landmarks), along with a switch engine and various pieces of rolling stock. Sergeant Floyd River Museum & Welcome Center - 1000 Larsen Park Road, Sioux City, IA
Located beside the Missouri River and bordering a picturesque waterfront trail, the historic M.V. Sergeant Floyd is a distinctive riverboat now resting on dry land. This historic vessel, named after Sergeant Charles Floyd of Kentucky, one of the members of the Lewis and Clark expedition, once served as a survey and inspection boat for the U.S. Army Corps of Engineers before it was retired. Today, it houses the Iowa Welcome Center and a River Museum, where visitors can explore exhibits about the Lewis & Clark Expedition and many other topics.
The Loess Hill National Scenic Byway Guidebook should be available at this Welcome Center. Lewis & Clark Interpretive Center - 900 Larsen Park Road, Sioux City, IA
When the Lewis & Clark Expedition reached the Mandan and Hidatsa villages situated along the Missouri River in 1804, they became the most renowned among many who had come here for trade and learning.
At the Lewis & Clark Interpretive Center, guests can engage with interactive exhibits, realistic animatronic characters, and rotating photo displays that highlight the historic expeditions of Lewis and Clark in 1804 and 1806. Experience captivating presentations, examine hundreds of genuine period artifacts, appreciate outstanding artwork, and converse with expert interpreters who vividly recount the legendary journey of the Corps of Discovery. The Center also highlights other significant explorers and residents who have shaped the history of this extraordinary section of the Missouri River over time. Every gallery within the Center is dedicated to sharing the distinct experiences of these various groups. Sergeant Floyd Monument - 2601 S Lewis Blvd, Sioux City, IA
elsewhere on the bluff. The grave was relocated once more in 1895. In 1901, a 100-foot Kettle River sandstone obelisk known as the Sergeant Floyd Monument was erected in his honor, and Floyd’s remains were transferred for a third time to rest at the foot of the new monument.
This was the first site in the United States to be designated a National Historic Landmark. Monona County
Monona County Byway Spine
Enter Monona County on CR L12 > Left on 133rd St/CR E16 > Right on CR L20 > Near Castana - Right on Hwy 175 - 4.5 miles > Left on Hwy 37 - 1.5 miles > Right on CR L16 - 7.5 miles it becomes CR E54 > Before Moorhead - Right on Hwy 183.
Wilderness Loop
This is a 30 mile paved & gravel loop.
Continue south on L12 (after the byway spine turns off at E16) - 5.5 miles > Left on Nutmeg Ave - about 2 miles > At junction with Oak Ave - continue straight - less than 1 mile > Right on 160th St - About 3 miles > Right on Olive Ave - less than 2 miles > Right on CR L20 > Castana about 2 miles. Larpenteur Memorial Road Connection
This is a 15 minute paved drive.
Starts as junction of CR L14 & CR L12 > Follow CR L14 - 5.5 miles > At Turin - Left on Hwy 175/37 to rejoin the byway spine east of town OR continue south on CR L14 to the Preparation Loop. Preparation Loop
The 15-mile long Preparation Loop is a combination of paved and gravel roads.
Head south from Turin for 9 miles on L14 / Larpenteur Memorial Road > Left on E60 - 1.5 miles > Left on Oak Avenue - about .5 miles > Right on 314th Street - 1 mile - Preparation Canyon State Park > at Park Entrance - Left at Y to continue on 314th Street to Byway Spine Hwy 183 about 2 miles away.
Monona County Byway Attractions
Preparation Canyon State Park - Preparation Canyon Rd, Moorhead
Spanning 344 acres, Preparation Canyon State Park occupies the land that was formerly the town of Preparation.
In 1853, Charles B. Thompson separated from the Mormon wagon train en route to Utah after claiming he had received divine instruction from the "Spirit." Leading a group of 50 to 60 Mormon families, Thompson traveled to Kanesville, now known as Council Bluffs. After much searching, Thompson and a select few men settled on an area known as "Monona," a Native American term meaning "Peaceful Valley." There, they established the community of Preparation, building homes and schools, and launching Monona County’s first newspaper, which Thompson personally managed. For these settlers, the valley served as their "School of Preparation for the Life Beyond." They soon realized they had chosen one of the most fertile agricultural regions in the new territory. Recognizing its promise, Thompson used his newspaper to publish a message he attributed to a spirit named "Beneemy": "I appoint Charles B. Thompson chief steward of my house to receive, hold, manage, and direct all the treasures of my house to him." Trusting in Thompson’s spiritual authority, his followers surrendered all their property and deeds to him, making him extremely wealthy. He also instructed them to refer to him as "Father Ephraim," a name taken from the scriptures. By 1856, however, the settlers grew suspicious and demanded the return of their belongings. Thompson, refusing their requests, faced mounting anger from the community. When word reached him that a mob intended to lynch him, he was forewarned by a young follower and evaded capture by hiding in an attic in Onawa. Ultimately, he fled Iowa without reclaiming the deeds. Many of his disillusioned followers left the valley and continued their journey toward Utah. That same year, the Iowa Supreme Court intervened and divided the land equally among the remaining families. The town of Preparation began to expand, once boasting sixty-seven houses, a post office, a skating rink, and a blacksmith shop. However, by 1900, the town had declined, leaving only a stockyard, which eventually closed in 1946. In 1934, Martha and Walter Perrin — descendants of some of the original settlers — sold 82 acres of their property to the state of Iowa. Martha Perrin later sold another 157 acres in 1969, including the Perrin family homestead. These parcels included the very valley where the Mormons had once founded Preparation as their refuge and place of spiritual readiness for what lay beyond this life. Picnic tables, a shelter, and non-modern toilets are provided. To help protect the canyon's natural seclusion and the remaining evidence of its dramatic past, camping is restricted to hike-in camping only at designated sites. Preparation Canyon State Park lies at the very north end of the Loess Hills Pioneer State Forest. Loess Hills State Forest
Loess Hills State Forest spans 11,484 acres divided among four separate units. As the state’s most recently established public forest, it began to take shape in 1985 through a combination of land donations and acquisitions. The forest is managed with a focus on sustaining natural resources for the long term, while also offering a variety of outdoor recreational activities.
Roughly 1.5 miles west of Preparation Canyon State Park, visitors will find an accessible observation deck that offers some of the finest views into the heart of the Loess Hills. Here, a stone commemorates Walter Ordway Jr., who named this place “The Spot.” Walter played a key role in creating the Loess Hills Byway program, following in the footsteps of his ancestor, Sergeant John Ordway. Sergeant Ordway was a member of the Lewis and Clark Expedition that passed through these hills in 1804. Informational displays at this site provide insights into the unique landscape and its significance. Turin Loess Hills State Preserve, and Sylvan Runkel State Preserve – 29631 205th St, Onawa
Located just north of Turin, Sylvian Runkel State Preserve and Turin Loess Hills State Preserve are publicly owned parcels encompass over 3,500 acres. They represent one of the largest sections in the Loess Hills where visitors can experience the original prairie landscape of the hills. Each year, the Western Hills Area Education Agency holds the Loess Hills Prairie Seminar here on the weekend after Memorial Day.
Trailheads for several hiking routes can be found at parking areas on 178th Street and Oak Avenue. Turin Man Archeological Site - 498 IA-175, Turin
In 1955, a skeleton was unearthed in a gravel pit near Turin, Iowa. Initially, specialists believed the remains dated back approximately 10,000 years, possibly belonging to Ice Age-era inhabitants. Continued excavation soon revealed three additional human skeletons nearby. After months spent meticulously reconstructing the bones and conducting scientific analyses, researchers determined that the individuals were most likely members of a family who lived roughly 6,000 years ago. Artifacts and burial arrangements at the site showed striking similarities to ancient burial traditions found throughout the eastern United States. Until August 2011, when a 7,000-year-old settlement was discovered in Des Moines, the Turin skeletons were considered the oldest known human remains in Iowa.
R.T. Reese Homestead & Davis Wetland –
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During his military service, Dodge established the Union Army’s first spy network. He developed lasting friendships with prominent generals like Grant, Sheridan, Sherman, Rawlins, Black, and Logan, all of whom visited him in Council Bluffs after the war. His extensive business ventures led him across North America and Europe, but despite his travels, Council Bluffs remained his permanent home. |
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Susan Rissi Tregoning is the 8th photographer in the past four generations of professional photographers in her family. After a long career as an art buyer and interior designer, she put her career on hold in 2006 to travel with her husband and his job. In the process, she found her roots again, developing a photography obsession far beyond casual snapshots that evolved into a desire to capture every location and object as art. By meshing her two loves, photography and design, she has come full circle only now creating art instead of purchasing it for others.
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I am the 8th photographer in 4 generations of my family. Back in 2006, my husband accepted a job traveling, and I jumped at the chance to go with him.
I blog about long scenic drives and places that I find interesting around the United States.
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