Black Pool — Local services in West Yellowstone

Black Pool. The Black Pool of Yellow Stone is another hot spring and located next to the Abyss Pool in the same route along the West Thumb Geyser Basin trail.

When I was there, a bit confused with the name because of the water so clear and colored blue no black at all. Yes, it supposed to be black but for some natural reasons, it changed from Black to light blue. The water was cool enough up until 1991 for dark orange-brown cyanobacteria to grow throughout the pool. When combined with the blue of the water, the pool appeared to be an exceptionally dark green to almost black, hence the name. In 1991, shifting thermal energy to Black Pool causing them to heat up. The water temperature became hot enough to kill all the cyanobacteria in the pool, turning the pool a rich teal blue color. The name of the pool remains "Black Pool."

There's no more cool water pool called Black Pool but now extremely hot and become the most beautiful and intensely blue pools. Please...

Black Pool located in the West Thumb Geyser Basin is absolutely phenomenal. The pool beautifully reflects the color of the sky on a blue sky day. On a calm day, the details of the forms inside the pool show up clearly. In addition, the colors in the run-off at the end of the pool are breathtakingly beautiful. I would highly recommend visiting the West Thumb Geyser Basin to see Black Pool as well as many other incredible geothermal features located in this...

Black Pool is one of the most beautiful pools in the West Thumb Geyser Basin. The name is currently a little misleading but the pool used to be much darker. When the pool heated up it killed off the dark orange-brown cyanobacteria. It is now one of Yellowstone's most beautiful and intensely blue pools. This is definitely worth a stop and the short hike to see it. While you are here make sure that you see the Abyss Pool that is...