He stood up, put his toes on the edge, and looked down. Far below, a dim green light glowed, the only light in this pit of blackness. It might be a hundred feet, it might be a mile, it might be a hundred miles. There was no way to know.

He fell and fell, like Alice down the rabbit hole. It seemed to go on forever. Not seconds but minutes. An eternity.

WHUMPF!

He hit with such force that it should have snapped his calves and thigh bones and burst his knees and jackhammered his spine and cracked his head open like an egg.

Instead, after lying crumpled for a moment, he unwound his twisted limbs and pushed himself back onto his feet.