Crag Lough is a small, dark lake pooled beneath the dolerite cliffs of Highshield Crags, one of the loveliest stretches of the central Hadrian’s Wall walk. The path runs along the crag tops right above it, between Steel Rigg and Sycamore Gap. Climbers work the crags and buzzards ride the updraughts. There’s no road to it — you walk in, most easily from the Steel Rigg car park.

© Chris Morgan / Geograph · CC BY-SA 2.0