I found this spot while scouting out a location for a sunset BBQ with friends and family. (this isn't where we set up the grill haha.) I will say that I had to get wet. Every 5 minutes or so a set would roll in and completely cover the rocks and then would withdraw quite violently. I was standing in depression just on the other side of these two lava sink holes and when the water came in, it was up to my waist.