Redcliffe Caves
Redcliffe Caves are a series of man made tunnels beneath the Redcliffe area of Bristol, England. The Triassic red sandstone was dug into in the Middle ages to provide sand for glass making and pottery production. Further excavation took place from the 17th to early 19th centuries and used for storage of trade goods. There is some evidence that prisoners captured during the French Revolutionary Wars or Napoleonic Wars were imprisoned in the caves but it is clear that the local folklore that slaves were imprisoned in the caves during the Bristol slave trade is false. After the  closure of the last glass factory the caves were used for storage and became a rubbish dump. The caves are not generally open but have been used for film and music events. The explored and mapped area covers over however several areas are no longer accessible and the total extent of the caves is not known. History. The caves were dug to provide sand for glass making and pottery production. They were dug into the Triassic red sandstone cliffs, which give the area its name, adjacent to the southern side of Bristol Harbour, behind "Phoenix Wharf" and "Redcliffe Wharf". The  first excavation was during the Middle Ages but the majority of the digging was during the mid 17th and early 19th centuries. In the larger caverns the stone columns supporting the roof were not sufficient and these have been supplemented with wall arches made of stone, brick and more recently of concrete. In 1346 a hermit called John Sparkes lived in the caves and prayed for his benefactor Lord Thomas of Berkeley. Several other hermits lived in the caves between the 14th and 17th centuries. There is no evidence to support the rumours that the caves were used to hold  slaves during the Bristol slave trade of the 17th and 18th centuries, however they were used to store the goods brought in by ships from Africa and the West Indies. There is some evidence that prisoners captured during the French Revolutionary Wars or Napoleonic Wars were imprisoned in the caves, but there is no evidence to show they were involved in the creation of the New Cut. Once the final glass factory in Bristol had closed the caves were used for storage and the disposal of rubbish. Some of the waste came from the Redcliffe Shot Tower at the corner  of Redcliffe Hill and Redcliffe Parade, where the cellar was dug out into one of the tunnels. Waste from the lead shot production process was deposited between its opening in 1782 and closure in 1968. During World War II small parts of the caves were surveyed for use as an air raid shelter. A bomb created a crater into the caves which was subsequently filled in blocking access to some parts of the cave system. The caves have been used as an underground venue for the Bristol Film Festival, and for theatre productions. Location and extent. The full extent of  the tunnels has not been explored as part of the site was split by a rail tunnel. The caves are believed to extend further than the currently visible area stretching to the south of the rail line. The explored and mapped area covers over and extends nearly as a far as Bristol General Hospital. They may also once have linked with the crypt of St Mary Redcliffe. A survey in 1953 and 1954 explored and mapped the accessible portions and provided some evidence of the wider extent of the caves. Several buildings in the area have or did have access  to the caves from their cellars, including the Ostrich pub where part of a wall has been demolished to show part of one of the caves.