E.W. Kelley,2024-02-122024-02-121906-01-0110.15786/13683649https://wyoscholar.uwyo.edu/handle/internal/5985https://doi.org/10.15786/13683649Grotto Geyser, Exhibiting a Strange Cone Formation, Upper Geyser Basin, Yellowstone Park, U.S.A.https://creativecommons.org/licenses/by/4.0/PhotographyStereoscopicYellowstone National ParkWyomingGrotto Geyser, Exhibiting a Strange Cone Formation, Upper Geyser Basin, Yellowstone Park, U.S.A.figure