Its taking awhile to get used to the smell. The shit-stench is so thick down here all your hairs have curled into tight kinks. A couple weeks go by and your eyes are adjusted to the very dim lighting. You are finding cave paintings down here. Men hunting giant turds with spears. Rivers of filth with tentacles reaching out to snag writhing people. You realize there was a ancient civilization here once. You aim to learn as much as you can about it. Six days later you find your first arrowhead, sticking out of the brown waters at the sewage river's edge.