The boardwalk viewpoint of Black Pool provides close up viewing of this spring that is anything but black. Low water temperatures enable colorful algae growth. Afternoon light enhances color. West Thumb Geyser Basin, while the smallest of the developed geothermal areas, is the most scenic due to its location along the shoreline of Yellowstone Lake. Early mornings create stunning steamy scenes with the caldera edge and Tetons as backdrop, mid day creates deep colors in hot springs....
more »

The boardwalk viewpoint of Black Pool provides close up viewing of this spring that is anything but black. Low water temperatures enable colorful algae growth. Afternoon light enhances color. West Thumb Geyser Basin, while the smallest of the developed geothermal areas, is the most scenic due to its location along the shoreline of Yellowstone Lake. Early mornings create stunning steamy scenes with the caldera edge and Tetons as backdrop, mid day creates deep colors in hot springs. Yellowstone National Park, Wyoming.
« less