Tourists at Black Sand Basin, Yellowstone National Park, Wyoming, USA

america american area areas at basin being beings black conservation countryside day daylight daytime during energy exterior exteriors geologic geological geologically geology geothermal geothermic geyser geysers go goes going heat heritage hot hot spring hot springs human humans landscape landscapes national national natural nature north of outdoor park park parks path paths pathway pathways people person persons photo photos power preserve preserves reserve reserves sanctuaries sanctuary sand scenery scenic several shot shots source sources spring springs states steam steaming the thermal tourism tourist touristic touristical touristically tourists tourists touristy trail trails unesco united us us american usa vapor vapour walk walking walks water way ways well wells wildlife world wyoming yellowstone