Spelunking an Unmapped Lava Tube

Iceland has more lava tubes than it has people who want to crawl through them. Most tourists visit the well-lit, well-marked, well-insured ones with handrails and gift shops at the exit. I visited one that a volcanologist found last month on a satellite pass and hasn't told the tourism board about yet. His name is Einar. He has regrets. I have a headlamp.

The entrance is a crack in a field of moss that looks like a mistake in the landscape. Inside, the tube is black glass — walls smooth as obsidian, floor uneven as a bad decision. Einar said the last eruption carved this channel in forty-eight hours. I said I could respect that timeline. He did not find that comforting.

We crawled for two hours. The tube branched twice. Einar wanted to map. I wanted to find the end. At the deepest point, our headlamps caught something on the wall — mineral deposits that glowed faint orange, like embers that forgot to die. Einar took samples. I took a moment. Underground, time works differently. Carl would have been claustrophobic by minute three. I was annoyed we had to leave.

Emerging into Icelandic daylight felt like a betrayal — too bright, too open, too many tourists asking if we'd seen the waterfall. We had seen the inside of the planet. The waterfall could wait. Einar said he'd name the tube after me if I signed a nondisclosure agreement. I said name it "Carl's Nightmare." He laughed for the first time all day. Good enough.