"Diana's Punchbowl, also called the Devil's Cauldron, is a geothermal feature located on a small fault. It is located in central-western Nevada, in the Monitor Valley, about 30 miles southeast of Austin, Nevada in Nye County."
Diana's Punchbowl was pretty impressive. I parked the truck down below although as I was driving from the Monitor Valley road over to the punchbowl there was a 4wd truck up on top near the hole. They were gone by the time I parked. I have read elsewhere on the internet that the water temperature is around 180 degress F. There was a sulfur smell in the air also at the punchbowl.