One reservoir in different moods.
But then, perhaps the sky is the moody one, lending its colours and atmosphere to the water.
For bodies of water like this are deep and calm, with an air of waiting that makes them restful. Most walkers are drawn to pause here and gaze over the stone wall to take in the view.
Earnsdale Reservoir is a few steps away from the top entrance to Sunnyhurst Wood in Darwen. The moor above it is part of the West Pennine Moors Site of Special Scientific Interest, a protected area.