It was midday, the sun’s yellow disc was high in the clear-blue, summer sky and it was sweltering. The heat burned into every cell of my body and mind. I could feel my back beneath my rucksack wet with sweat, and drops of it ran down my face from time to time. The grass beneath my walking boots was dry and brown, there’d been little rain for weeks. “I think we should take a break, it’s too hot.” My girlfriend, Sara, turned to me. Her eyes were hidden by dark black sunglasses but her face was pink and beads of moisture covered her sunburned forehead. Dark pools stained her T-shirt under the armpits. I looked around at the desolate moorland – parched grass with the odd brown rock, all that was visible to the horizon in every direction. There was no sign of life, no sheep, no birds, nothing. “Look, we can go and rest on those rocks over there,” said Sara, pointing to a jumble of boulders in the far distance, off to one side.