I believe this is called Little Big Hot, it to is located up mear Mammoth, very hard to find even with a book. We searched for this one for hours before we found it. Directions in the book were clear ONLY after we made it. The names of roads were gone, and things that were supposed to be along the trails were long gone as well. Anyhow, when we ran across this one, we found many visitors, they gave us better directions in than how we came in, invited us in and we were hooked. Rumor has it that this tub was built by a gentleman that actually did build pools for a living, the reason behind that is due to the way it is shaped inside with step downs and different height seats to the can holders around the outside of it. This one, when left to flow freely, gets extremely hot and takes a long time to cool off. There is no cold water out here to pipe in so you might be in for a wait if its too hot.