Why is it called Black Pool when it’s blue? One of the most often asked questions at West Thumb Geyser Basin is, “Why is it called Black Pool when it’s blue?” This NPS photo from 1978 shows how it used to look, which is black. The microbes lining the surface of...
Giant Geyser Awakening? Geyser Gazers in Yellowstone yesterday had a great kick off to 2017 with a Hot Period from Giant Geyser. They noticed Grotto Geyser was recovering from a “marathon” eruption – one that lasts a long time and drains the system enough to give...
Watching “N.O.T. Geyser” Grow at West Thumb UPDATE: This thermal feature has a new nickname of “Waterfall Geyser” given due to the fact that numerous visitors when seeing this geyser in eruption commented about the waterfall of water from this...
