I found myself in the lake district, not for the first time(!), with damp wet, overcast weather. I find the best thing to do in these conditions is to seek out waterfalls, rivers etc where the damp conditions provide saturation to the surrounding plants and leaves and the dull conditions reduce contrast allowing for more detail to be captured. The dull weather can also aid long exposures if that is what you want.
Here I found a 'cut diamond' embedded in the rocks. I used a Polariser to allow the viewer to see into the pool of water and to help saturate the leaves. It also helped to reduce the shutter speed.
Most people were taking photographs of the waterfall just to my left as you look at the shot but I preferred this jem!
Camera: Nikon D3
Lens: Nikkor 16-35 f4 VR @ 23mm
Exposure: 2 seconds @ f16 @ ISO 200
Filters: B&W Circular Polariser
River Brathay, Lake District, England