Eccleston Quarry is a mile south of Eccleston, Lancashire. It is also called Eccleston Delph and Eccy Delph (pronounced "ekky"). It is an old stone quarry that flooded. It is a popular site for scuba diving. Visibility is generally very poor and ropes have been strung between each underwater 'feature' to aid navigation, since traditional compass methods are all but impossible in the murky waters. Though much work has been undertaken to improve visibility in the recent past. In 2010 it has been noticed that the visibility is much improved.
Formerly a Mr. Hurst ran it as a stone quarry and employed 12 men. From it came stone for Blackpool Promenade, and thin split stone used as slates for roofing in the area. It was formerly also called Hurst House Delph and Marsden's Quarry.
A local resident said that "during World War II a Ministry paid a local man to run at intervals a pump to keep the quarry empty while its owner and staff were away. After the war due to official reorganization they stopped paying the local man, who therefore stopped running the pump, and over time the quarry flooded."
After it was abandoned and allowed to flood by ground water seeping in, it was an unofficial scuba diving site for a long time. The back of the quarry was cliff standing straight out of the water, and there were no buildings except a stone hut near the entrance, and a machinery shed which was submerged when the quarry flooded. Over the years the shed's sheet-metal walls and roof rusted away, leaving its metal skeleton.
On 14 October 1979 the handless body of narcotics dealer Marty Johnstone ("Mr Asia") was discovered in the quarry by local divers. Johnstone had been murdered on the orders of his associate Terry Clark ("Mr Big"). The discovery led to an international police investigation and the breakup of the "Mr Asia" narcotics gang.[1]