Layers with thermophilic bacteria, Upper Geyser Basin, Yellowstone Nationalpark, Wyoming, USA, United States of America

america basin geyser heritage layers nationalpark north site states usa united upper world wyoming yellowstone american area areas bacteria colored coloured countryside discoloring discolouring exterior fields format geothermal geothermic geyser geysers heritage horizontal hot landscape landscapes national natural nature outdoor outdoors outside park photo scenery scenic sediments seeing sight spring springs thermal thermophile thermophilic worth