Lloyd, Merle D.2019-12-122022-02-032019-12-122022-02-03https://hdl.handle.net/11124/173847Donor: Colorado Mining Association.Photographed by Merle D. Lloyd.View looking down on the buildings at the Sandiago Tunnel, Treasure Mountain.Accompanying document reads: "Camp buildings at Sandiago tunnel on Treasure Mountain." Caption reads: "XII."4 1/2 x 3 1/2 inchesblack-and-white photographsCopyright retained by Colorado Mining Association.Underground mining -- ColoradoMine buildings -- Colorado -- San Juan CountyStillImage