What follows is an account of an instance where I, a person of relatively sound mind and body, could not believe the evidence before my own eyes. It might not have been a hallucination that I experienced, but it was surely a great jolt of consciousness. The scene: I’m in my closet-sized cabin, inside a white dome built to house a crew of six for four months as part of an isolation experiment. As a crew, we are working and living as ‘explorers’ stationed on the surface of ‘Mars’. Our colony is lifelike and NASA-funded, but it is situated in a place quite a bit closer to home, on a remote slope of a Hawai’ian volcano.