"What does being in a cave feel like? Let's start with the basics: It's dark. It's really dark. Water and air may trickle past the first room of a cavern, but light is bound to [within] just a couple feet of the entrance. Once you've taken a turn deeper, you're surrounded by true black, no stars. You can stand in the dark for as long as you want, and your eye will never adjust. […] I said multiple times, out loud, 'There's no way that's the way we came from!' I was wrong. And, thankfully, I was with people in the cave who were much smarter me, but I couldn't shake the What-Ifs from my head. What if I had stumbled in here alone? What if my light went out? What if all I had was my sense of touch and the sound of caverns, trying to understand the walls of rooms that barely made sense when illuminated?
—Jacob Geller, "Fear of Depths"
