A rescue mission is under way to save a man who has been trapped inside a cave in South Wales for two days.

The South and Mid Wales Cave Rescue Team said the man fell while caving in Ogof Ffynnon Ddu, a cave system near Penwyllt in the Brecon Beacons on Saturday.

There is no detail on the severity of the injuries suffered, however because of the injuries he suffered in the fall he is said to be unable to climb out of the cave.

The emergency service was notified by another caver and since then at least eight rescue teams from across the UK have joined the operation.

"This incident is ongoing and involves cave rescuers from teams across the UK," it said.

Involved are the Gloucester Cave Rescue Group, Midlands Cave Rescue Organisation, Derbyshire Cave Rescue Organisation, Mendip Cave Rescue, South East Cave Rescue Organisation, the Cave Rescue Organisation, and Upper Wharfedale Fell Rescue Association.

The caver has been given medical treatment underground and other cavers have been with him while the rescue plan is arranged.

Where is Ogof Ffynnon Ddu?

Located inside a nature reserve, Ogof Ffynnon Ddu – meaning Cave of the Black Spring – was discovered in 1946 and is 300m deep at its lowest point, with its underground caverns stretching to over 30 miles.

The caves may only be accessed by properly equipped cavers with a permit from the South Wales Caving Club - the entrances are gated and locked at all other times.

For more information about the caves, including photos and videos, visit the South Wales Caving Club website.