The National Diving and Activity Centre is a large flooded quarry

Quarry

A quarry is a type of open-pit mine from which rock or minerals are extracted. Quarries are generally used for extracting building materials, such as dimension stone, construction aggregate, riprap, sand, and gravel. They are often collocated with concrete and asphalt plants due to the requirement...

 at Tidenham

Tidenham

Tidenham is a village and civil parish in the Forest of Dean of west Gloucestershire, England, adjoining the Welsh border.The parish includes the villages of Tidenham, Beachley, Boughspring, Sedbury, Tutshill and Woodcroft, and according to the United Kingdom Census 2001 had a population of 5,316...

, Gloucestershire

Gloucestershire

Gloucestershire is a county in South West England. The county comprises part of the Cotswold Hills, part of the flat fertile valley of the River Severn, and the entire Forest of Dean....

, England

England

England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

, near to the border with Wales

Wales

Wales is a country that is part of the United Kingdom and the island of Great Britain, bordered by England to its east and the Atlantic Ocean and Irish Sea to its west. It has a population of three million, and a total area of 20,779 km²...

 at Chepstow

Chepstow

Chepstow is a town in Monmouthshire, Wales, adjoining the border with Gloucestershire, England. It is located on the River Wye, close to its confluence with the River Severn, and close to the western end of the Severn Bridge on the M48 motorway...

. It was formerly Dayhouse Quarry, a source of limestone, which was flooded in 1996. The diving centre opened in 2003.

It is an inland scuba diving

Scuba diving

Scuba diving is a form of underwater diving in which a diver uses a scuba set to breathe underwater....

site, popular with technical divers and free divers due to the depth - 80m in some places. There are a number of underwater attractions in depths ranging from 6m to 76m.

All freediving at the National Diving and Activity Centre is through SaltFree Divers. SaltFree are the largest freedive group in the UK.

PADI and IANTD training is provided on site and many local BSAC and SAA clubs use the site for training.