The small community of Derbyhaven is situated on the east coast of this isthmus, which lies close to Castletown, Isle of Man.

During periods of low visibility the only foghorn was a cow's horn which would be blown by a party of men on the shore – the sound of which carried for half a mile at best.

In 1832 a ship carrying Irish workers to the Isle of Man to dig potatoes was lost with all hands, and 32 bodies were washed ashore.

[2] Other structures to be found on the peninsula include the remains of a World War II-era gun training range, close to the lighthouse, and a memorial to local naturalist Henry Madoc, who was also the island's Chief Constable.

[2] The Castletown Golf & Country Club (formerly also a hotel, closed since 2007) is set on the peninsula and the isthmus connecting it with Derbyhaven and has been the scene of many international championships.