Mammoth Hot Springs... alien vista in Yellowstone National Park...

We arrived too late to properly explore the Hot Springs at Mammoth in Yellowstone National Park... but we did have time for a brief look at the lower terraces nearest the lodge and dining areas... I will be posting more photos from this amazing place on my travel blog (some are already there) but am trying to keep to one photo a day from each day of our journey on this blog... (may weaken in that resolve by the time I do my next post... having too much fun on this vacation to post with any kind of regularity!)