Teeter Peak: Boulder Balance

Balance a sky-high seesaw as boulders fall — run to the rising side or fall.

A stone beam rests on a single pillar at the top of a mountain. You are standing on it. There is nothing underneath.Boulders start falling from the sky. Every one that lands shifts the balance, and the beam tips toward the heavier side. Your body is the only counterweight you have, so you have to run uphill — toward the side that is rising — and hold the beam level with your own weight. The steeper it tilts, the har…