It was cooler out of the sun’s searing light. The rock had worn unevenly, leaving a series of projections and ledges. Above him he could see the sky, deep blue and inviting like a pool of cool water. He needed water, so he began to climb. It was hard work, painful work, but he persevered. At one point, he grabbed what appeared to be a convenient handhold and the stone betrayed him. Screaming in agony, Sam slid down several meters in a cascade of dust and rock fragments. He lay against the rockface, winded and coughing, willing the dust to settle.