Rock glacier By Matt Young January 31, 2022 12:00 MST Photograph by James Kocher. Photography contest, Honorable Mention. Rock glacier on unnamed peak (Mountain 12730 on USGS topo maps) in San Juan Mountains. Viewed from Kendall Mountain (13,338 ft) south flank, Silverton, San Juan County, Colorado, July, 1997. (Kodachrome 64 and Olympus OM-10 FC with Toshiba 35-105 mm, F/2.8 zoom lens.)