Buster decided to sit this one out. He’s 13, and we weren’t sure he wanted to go digging around in a cave.Doesn’t look like much from here, but come closer …It goes almost straight down, into the cave.A few intrepid pups (and their companion) hiked the cave. Note the booties, which protect their paws from sharp rocks.A view down the cave. We knew to bring extra layers, since it can be cold here (32-40 degrees F). In July, isn’t that the point of this hike?Lava cave floor. My husband Bryon helped me over the rough spots. In spite of my excellent trail shoes I twisted my ankle a few times. (Luckily nothing serious.)At the split. “Stay to the right,” we were told. “It’ll be easier.”“Easier” is relative. Alex is 6’3″. (Even I had to crab-walk this.)A view of the ceiling.A second view of the ceiling. The cave changes to reflect humidity and other ambient conditions.A Rorschach test. (Not really–a view of the walls.)The sign says, “DUCK”. In case you needed the reminder.Grafitti at the turnaround point of the hike. This is supposed to be the warmest point of the hike. I couldn’t tell, since I had already taken off and tied my sweat jacket around my waist.I wasn’t sure about the significance of the boat, either.Mold growing from litter left by prior hikers.