Images of an unnamed thermal feature in the Three River Junction thermal area in southwest Yellowstone National Park

Images of an unnamed thermal feature in the Three River Junction thermal area in southwest Yellowstone National Park. A, WorldView-3 satellite image from September 2014. B, National Park Service (NPS) aerial photograph from 2017. Images A and B were acquired before the feature went largely dry in late 2019 or 2020. C, WorldView-3 satellite image from June 2020. D, NPS field photograph by Hillary Robison from July 2020. Images C and D were taken during the period that the feature was largely dry. By July 2021, the thermal feature had refilled and returned to its normal state.  Adapted from the 2022 Yellowstone Volcano Observatory annual report.