At the rim above Tensleep Canyon stands the Leigh Creek Monument, erected in 1889 in memory of English nobleman Gilbert E. Leigh. A lifelong big game hunter and outdoor enthusiast, Leigh went missing in the fall of 1884 during a hunting expedition. Men from the local area searched for him, and after a week they found his body and learned that he had fallen 100 feet to his death over the canyon wall while pursuing mountain sheep. The monument was erected by well known Sheridan area guide Robert Steward, built of native stone in dry mortar, approximately ten feet square at the base, and includes a marble slab memorializing Leigh, who was buried in Stoneleigh, England.