Access to Hell's Half Acre South side of highway. Hell's Half Acre - This unique setting of natural beauty covers approximately 320 acres. Investigation has confirmed that in former days the Indians drove great herds of buffalo into this depression for slaughter. Flint arrowheads and buffalo bones have been found here. A detachment of Captain B.L.E. Bonneyvill's party visited this site in July 1833. Wide open grasslands and spectacular scenery. From Grand Teton to Yellowstone National Park, from the Shoshone National Forest to the Eastern Great Plains, Wyoming is beautiful and awesome. Natural wonders that have inspired everyone