A large rescue operation has been started to save a man who became trapped in a cave system in Wales two days ago after injuring himself.
The man has been trapped inside the caves in the Brecon Beacons after he was hurt from a fall, and the South and Mid Wales Cave Rescue Team are now attempting to bring him to safety.
The emergency rescue team said the man was caving in Ogof Ffynnon Ddu near to Penwyllt on Saturday (6 November) when he fell.
The injuries he suffered during the fall have left him unable to climb out of the cave himself, although the exact nature and severity of his injuries is not yet known.
In a statement, the rescuers said: "The incident has continued during the night.
"We are moving the casualty towards the top entrance of the cave, which is located up on the mountain behind Penwyllt."
The rescue team rushed to the site of the incident after being made aware by another caver.
Since the alarm was raised, at least eight teams from around the UK have become involved in helping to rescue the stricken man.
Gloucester Cave Rescue Group, the Derbyshire Cave Rescue Organisation, Midlands Cave Rescue Organisation, Mendip Cave Rescue, the South East Cave Rescue Organisation, the Cave Rescue Organisation, and Upper Wharfedale Fell Rescue Association are all present.
The cave itself is located within a nature reserve, and the name Ogof Ffynnon Ddu translates as Cave of the Black Spring.
It was discovered back in 1946 by the South Wales Caving Club and - at the lowest point of the system - is nearly 300 metres deep.
The underground caverns stretch for more than 30 miles, and only experienced cavers are allowed to venture in.
That makes it the second longest cave system in Wales, as well as one of the deepest in the UK.
On the caving club website, it states that the caves are prone to flooding after periods of wet weather.
The website reads: "The through trip from the top to the bottom entrance remains a classic in the UK, and its approx 61km [31 miles] of passages provide everything from huge chambers, beautiful formations, to yawning chasms and thundering river passages.
"The routes through the cave are too numerous to mention.
"Be aware that the mainstream and some other parts of the cave are prone to flooding, and in any event a journey down the mainstream is long and cold and wet, so go prepared."
Featured Image Credit: PATopics: UK News, Rescue, Wales