Here is another version, this time from The Times, and quoting a Brian Prewer
http://www.timesonline.co.uk/article/0,,2-1429220,00.html
Hard to swallet: £10,000 for a wet hole in the hillside
IT SUFFERS from rising damp, has no views to speak of and would not be suitable for the claustrophobic. A 250ft deep pothole that leads to a flooded chamber has been put up for sale with a guide price of £10,000.
The hole, known as Cuckoo Cleaves, is popular with cavers but only the smallest of them can reach the bottom. At the end of 1,050ft of narrow, winding passages is a 13ft by 4ft chamber that is partially filled with muddy water.
The limestone hole, near Priddy in the Mendip Hills in Somerset, was discovered in 1947 by Wessex Cave Club. The current owner's father left it to him when he sold the surrounding farmland. But now the son, who wants to remain anonymous, has decided to sell.
The hole comes with mineral rights and a small area of land surrounding the opening, which is at the bottom of a depression.
Brian Prewer, from the Wessex Cave Club, said: “The Mendips have many depressions that are known as swalletts and at the bottom of these there are almost always caves.â€
Richard Nancekivell, of the chartered surveyors handling the sale, David James and Partners, said: “This is probably one of the most bizarre properties we have been asked to sell. It is very rare for these to come up. It is very popular with cavers but at the moment it has a manhole cover to make sure only those who know what they're doing get in.
“The current owner's father sold the land around the hole some years ago but left the cave as a novelty to his son. His son, now a commercial farmer in Priddy, has decided to cash in as it is of no practical use to him.
“It comes with mineral rights but a lot of what may have been down there would have been washed away.
“I imagine there will be three types of buyer: cavers, novelty buyers and investment buyers. It may be that someone will buy it and donate it to a caving charity. We have had one offer and three or four people who have written to ask to view.â€