Canoeists in a Boat Cave, Wisconsin Dells, Henry Hamilton Bennett, c. 1890-95, MoMA: Photography

Courtesy of the H.H. Bennett Studio
Size: 13 ¾ × 10 ¾" (34.9 × 27.3 cm)
Medium: Gelatin silver print, printed c. 1965

http://www.moma.org/collection/works/44502