Also notable is the Silverpit crater, a crater-like feature near the Silver Pit, discovered in 2002.
Origin of the Silver Pit
In origin, it is probably a tunnel valley (Benn & Evans fig.9.27) which was kept free of periglacial deposits by the Wash River when the sea level was lower, towards the end of the Devensianglaciation. However, the Silver Pit may date partially or largely from the Wolstonian Stage.
The Silver Pit (or Silver Pits) was discovered in the 19th century by trawler fishermen from the South Coast of England. They found the small valley to be rich in flatfish, especially soles in winter.[1]