Caves are not places to be explored lightly... this is a list of folklore and ghost stories - please ensure you do not become one of the latter.
Knaresborough (Yorkshire) - Mother Shipton's Cave
Even in her own lifetime, Shipton was a well renowned prophetess. Her 'predictions' included the great fire of London and many political events, although her prediction for the end of the world (in the year 1881(!)) was later discovered to be a nineteenth century hoax.
Larne (County Antrim) - Devil's Churn (cave) and unidentified cottage in the area
Date unknown, although said to occur at midnight
A piper ventured into this cave and never emerged. It is said that at midnight his pipes can be heard being played deep under a cottage in Larne.
Old postcard of Lisdoonvarna, Ireland.
Lisdoonvarna (County Clare) - Unknown cave between Lisdoonvarna and Ennis
The waters of a secret cave located between these two places is said to make the old young, although anyone who actively sought to bathe within it was never seen again.
Llangattock (Powys) - Caves in the area
23 June (or Midsummer Eve) (reoccurring)
A ghostly choir was said to sing once a year within the cave network.
Middleton (West Glamorgan) - Goat's Cave, Paviland
The Red Lady of Paviland, an Upper Palaeolithic era skeleton found in the cave, was later discovered to be male rather than female. It is unclear how this misidentification has impacted the stories of how a phantom woman haunts the cave. Another piece of folklore which sprang up after the skeletal remains were found said that the 'woman' was a treasure hunter would had become trapped in the cave after a storm sprung up.
Mitchelstown (County Cork) - Mitchelstown Caves
The ghostly shouts sometimes heard emerging from the caves is said to belong to a man looking for a fairy ewe which had helped him become wealthy. When the creature grew too old to produce quality wool, the shepherd tried to kill the creature, which escaped and led all his flock into the caves.
Nesscliffe (Shropshire) - Kynaston's Cave
Legend - Old Nick
Wild Humphrey Kynaston, local highwayman and friend to the poor, used this cave as a hideout. His horse could make jumps so daring the creature was said to either be the Devil himself, or alternatively, the Devil had helped the horse.
New Forest (Hampshire) - Cold Pixie's Cave, Beaulieu Heath
A horse-like pixie, this fairy entity would play mild pranks and call out to horses, the distraction causing the creatures to became lost.
Nottingham (Nottinghamshire) - City of Caves, Broadmarsh shopping centre
This network of caves is said to be haunted by several figures. Dark indistinct shadows have been seen darting around, and an upset woman in Victorian clothing has been spotted. It has also been reported that a few people have heard explosions overhead - the caves were used as bomb shelters during the Second World War.
Outer London: Bromley (Greater London) - Chislehurst Caves
Many ghosts are said to haunt the caves, including a woman drowned in a pool who was seen in 1961 - the witness knocked himself out on the cave roof while trying to escape the apparition. Other 'people' have been seen within, and the sounds of children and sometimes horses are reported. One myth says that a priest who spent the night at the site was found dead, the cause of death - fright!
Over Silton (Yorkshire) - Carlhow Hill, Hobthrush Hall (cave) and surrounding area
This member of the fairy family was said to be live in the caves and would occasionally leap around upon the hills in the area. He was also reported to churn butter for the local innkeeper in return for a slice of bread and butter. On one occasion, the innkeeper forgot to leave the food out for Hob, resulting in the entity leaving the area in disgust.
Pendine (Dyfed) - Green Bridge Cave
Said to have entered the cave but never to have left, the ghostly fiddler's music can still be heard.
Polperro (Cornwall) - Willy Willock's Hole (cave system)
Weather Dependent: Stormy nights
A local fisherman once died in the maze of caves located here - he can still be heard crying out for help when the atmospheric conditions are right.
An Arthurian knight.
Pont Nedd Fechan (Mid Glamorgan) - Craig-y-Ddinas, cave system
This location is another contender for the place where King Arthur and his knights lay sleeping.
Portland (Dorset) - Cave Hole (or alternatively an unknown cave), close to the lighthouse
The large, black dog that lives in an unknown cave grabs the unwary and drowns them.
Portreath (Cornwall) - Sea cave in the area
Wrath was a giant who lived in a cave with direct access to the sea. He would wait for a ship to wreck before taking the surviving sailors home to eat.
Rhosili (West Glamorgan) - Paviland Cave, between village and Port Eynon
This cave is haunted by a greedy woman who entered it looking for hidden treasure - a sudden storm blew up, trapping and drowning her.
Royston (Hertfordshire) - Royston Cave
Shadowy figures have been briefly spotted in this cave.
Runswick Bay (Yorkshire) - Hob Holes - caves along the coastline
Any child taken into the caves at low tide would be cured by the little people (or little person, depending on the legend) who lived within.
Shetland Islands (Shetland) - Fitful Head (cave), aka the Thief's Hole
A mythical seahorse that was owned by the robber-bandit Black Eric. The creature continued to roam the area for a while following its master's death.
St Albans (Hertfordshire) - Exact location unknown, said to have been a cave within a gorge in a nearby hill
Abbot Ealdred of St Albans rebuilt his abbey using the ruins of Verulamium, a Roman city located nearby. During the course of the work the Abbot destroyed the lair of the dragon of Wormenhert.
St Asaph (Clwyd) - Cefn Caves
Measuring around one hundred and forty centimetres in length, a crocodile was said to have been killed by a local man in this cave.
St Donats (South Glamorgan) - Large cave at Tresilian Bay
First New Moon of the New Year (reoccurring)
Peter, pirate, was buried alive at the mouth of a large cave here. For one evening a year he screams out for help.
Swordle (Highland) - St Columba's Cave
The site where Saint Columba baptised two criminals became a site of pilgrimage where travellers left offerings. One man who stole some of the gifts fell from his horse and broke his leg.
Pixies at home.
Torquay (Devon) - Kents Cavern (aka Kent's Cavern)
One of the stories the tour guides share is that the cave was once inhabited by pixies.