Hell's Half Acre is a large geological formation that encompasses over 960 acres. This geologic oddity is composed of deep ravines, caves, rock formations, and hard-packed eroded earth. Native American tribes used the ravines to drive thousands of bison over the cliffs during their hunts. This location was also used as the fictional planet of Klendathu in the movie Starship Troopers.

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.

In 2005, the small restaurant and motel sitting atop the ravine were shut down by the property's leaseholders due to a lack of visitors^[4] and subsequently demolished. The area is fenced off and there is no public access to the cliff edge nor the valley itself, but there is an interpretive sign west of where the former restaurant stood. As of July 2021, the fencing was still in place, but two gates in the fence were open, allowing vehicular access to a large gravel lot (with potholes) and a closer view of the topography.

Wyoming PBS Episode about Hell’s Half Acre: This alien landscape isn't on another planet...it's in Wyoming.

https://www.youtube.com/watch?v=XmQb56lPlOk

WGA has been granted permission by the Natrona County Parks Dept. to walk, drive and explore the entire Hell’s Half Acre Park area. 4-Wheel Drive vehicles are a must to drive into the bottom park of Hell’s Half Acre.  We will have transport from upper parking lot to lower part of Hell’s Half Acre. Meet in the Hells Half Acre parking lot at 9am for access to the lower portion of the park area.