At the rim above Tensleep Canyon is the Leigh Creek Monument, erected in 1889 in memory of English nobleman Gilbert E. Leigh. Leigh, a lifelong big game hunter and outdoor enthusiast, went missing in the fall of 1884 during a hunting expedition. Following his disappearance, men from the local area searched for Leigh; unfortunately, after a week of searching, they found Leigh's body and discovered that he had fallen 100 feet to his death over the canyon wall while in pursuit of mountain sheep. The monument, erected by well known Sheridan area guide Robert Steward, is laid up of native stone in dry mortar and is approximately ten feet square at the base. It contains a marble slab with an inscription memorializing Leigh who was buried in Stoneleigh, England.