Abyss Pool, West Thumb Geyser Basin, Yellowstone

This was an absolutely amazing week away with my friends, Linda and Tony, from England. I had known Linda since she was a baby and I was four or five years old, and our parents were best friends. Believe it or not, this was only my second holiday in about 30 years! Some of you may just remember that when my Brother in England died, several of my long-time friends who lived in the same city all stepped forward and helped me deal with everything long distance, from my Brother's funeral to finding everything possible in the house a good home (sold or donated). All my parents' belongings were there, too, so it was a mammoth task to go through everything and put aside every single personal item or document, which were then shipped to me here. When Linda and Tony were planning their trip to Canada, they persuaded me to join them for this wonderful week in Yellowstone National Park. I didn't know we were also going to Grand Teton National Park and then coming home via Glacier/Waterton National Parks, too! A wonderful treat!

It's not easy to remember what all the different hot springs and geysers are in Yellowstone National Park, so hopefully I am identifying them correctly. I believe this hot spring is Abyss Pool, which is near the Black Pool, at the West Thumb Geyser Basin. Amazing how similar some of them look - especially once you are back home after your trip and a year and a half has gone by! In the distance is Yellowstone Lake.

"Temperature 172°F. Dimensions 30x57 feet. Depth 53 feet. Abyss Pool is a colorful and interesting pool in the West Thumb Geyser Basin. Abyss is the deepest pool known in Yellowstone and received its name for its abyss-like depth. The dark green-colored water gives the illusion of a bottomless pool. Vandalism may have changed this pool's temperature. Coins and other debris thrown in have caused the vent to plug. The reduced spring flow also reduced the pool temperature, allowing abundant algae growth along the edge and run-off channels. The extensive microbial mats now support ephydrid flies, spiders and killdeers. An unusual eruption in 1987 caused the pool to surge and temporarily destroyed the microbial mats."

www.yellowstonenationalpark.com/westthumb.htm