Left: unknown sulfidic mineral; Middle: “Elephant’s Feet” stalactites, formation mechanism, unknown; Right: Pure sulfur crystal soda-straw stalactites emerging out of stinky cave wall crust. (All colors, natural).

 
  Part of: Spear JR, Robinson ST, Slayback P, Thieringer PH, Villarruel C (2023) The Shoshone Canyon Conduit Cave: A Greater Yellowstone Ecosystem Sulfur Cave. ARPHA Conference Abstracts 6: e108455. https://doi.org/10.3897/aca.6.e108455