2015
NZ5327 : Sea-coal on North Gare Sands
taken 10 years ago, 3 km from Seaton Carew, Hartlepool, England

Sea-coal on North Gare Sands
The black colouration in the ripple-marks is sea-coal: small pieces of coal from seams exposed below the sea, washed ashore by the waves. A larger lump of coal can also be seen near to the camera.