“I know I was. I did a little research. These are lava tubes — can you beat that? This used to be a volcano. Well, still is a volcano, I expect. Not quite dead, as you’ll see in a bit. All these caves and holes are bubbles of air that got caught in the cooling lava. I’ve put quite a bit of work into it over the last few decades. Some of it was easy — connecting the tubes just took a little elbow grease. Other parts took more imagination. Did you see the ceiling in the big room? That took me years to get right.”
