The Jumpers

I was in a rocky, mountainous area, and saw a man and woman painting the ground and walls of flat space between two cliffs, near a giant chasm. They were painting abstract patterns which were meant to be seen from a specific angle (the one from which I approached).

The man explained to me what they were doing, but was speaking a foreign language that I somehow understood.

The man (or possibly the woman) eventually jumped from the flat space, into the giant hole in the ground. Somehow the person who jumped had survived, climbed back onto the flat space and explained what they were doing.

He/she told me that they were jumping into a volcano, to their death, and they expected me to do the same.

So I jumped, but landed just a few feet down from the flat space and climbed back up.