Hell's Half Acre is a roadside curiosity - a large geological formation - located about 40 miles west of Casper, Wyoming on US 20/26. Encompassing over 960 acres, this geologic oddity is composed of deep ravines, caves, rock formations, and hard-packed eroded earth.
The location was known as The Devil's Kitchen, The Pits of Hades, and The Baby Grand Canyon until a cowhand appeared and thought he was at Hell's Half Acre, an area southwest of Casper full of alkali and bogs.
Native American tribes used the ravines to drive thousands of buffalo to their deaths during their hunts.
Hell's Half Acre was also used as the location for the fictional planet of Klendathu in the movie Starship Troopers.