The four of us slosh against ankle-deep water that slowly drains through the underground tunnel.

I occasionally look back down the corridor, framed by basalt bedrock, toward daylight entering the shaft’s ever-shrinking opening. I double-check my headlamp. While I don’t feel claustrophobic, underground exploration is not really my thing, and as much as possible I’d like to keep tabs on where I am. I continue to follow the group, fairly confident in the knowledge that two of the others have trod here before. Continue reading →