The unparalleled beauty of the Loess
(pronounced Luss) Hills can only be found in western Iowa. Formations of
loess with these extreme depths are found in western Iowa and in China. The
Loess hills in China have been altered and do not retain the original
characteristics. The singular landscapes found in western Iowa have drawn travelers
from around the world.
The Loess Hills were formed between 14,000 and 24,000 years ago. Active
glaciers covered the area and during warmer months the glaciers would melt
causing enormous flows of water through the Missouri River Valley. Strong
winds caused the silt left behind to accumulate and settle into bluffs, some
exceeding 200 feet.
The Loess Hills in western Iowa are now covered by prairie and forest
although some areas are privately owned and farmed by area residents.
Breathtaking views from bluffs overlooking picturesque valleys are common
along the Scenic Byway which winds through 220 miles of western Iowa.
Several trails wind their way through the rugged Loess Hills, and along the
many streams and springs found in the area. A hike in these graceful hills,
sometimes known as "Fragile Giants" will give you an opportunity to view
exquisite wildflowers, prairie grasses, upland timber and home to
populations of white tail deer, quail, squirrel, pheasant and turkey
Preparation Canyon State Park
The 344 acre Preparation Canyon State Park is a remote and lovely area still
relatively untouched by humans. The park is located in Iowa's unique Loess
Hills and is surrounded by dramatic ridges on the north, south and west. It
provides a beautiful backdrop for hikers and family picnics. Picnic tables,
a shelter and non-modern toilets are provided. In order 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 the designated sites.
Preparation Canyon State Park lies at the very north end of Loess Hills
View of Preparation Canyon
The Loess Hills State Forest
Loess Hills State Forest is located in west-central Iowa in Harrison and
Monona Counties. It is comprised of 4 units totaling 11,600 acres. The
Little Sioux Unit, 3,017 acres, lies between the towns of Little Sioux and
Pisgah. Approximately 30 miles from Mapleton.
The Preparation Canyon Unit, 3,216 acres, is located north of the Town of
Pisgah. This unit has a small lake with good fishing. An overlook,
constructed in 1997, provides visitors with a spectacular view of the
Except for certain areas within 200 yards of residences and the headquarters
area, the entire forest is open to hunting. The entire forest is also open
to hiking, nature study, and cross country skiing. There is good all weather
and dirt road accessibility to the forest area parking lots. There is no
camping on the forest.