Chislehurst Caves

Chislehurst Caves are neither caves nor ancient. They are chalk and flint mines under the London Borough of Bromley, and the attraction that runs them sells “over 8,000 years of history” and “over 22 miles” of tunnel. The measured figures are smaller and far later: the earliest document is a deed of 1737, the mines were worked commercially from 1830 until roof falls closed them around 1860, and Arthur Bonner, who surveyed every yard of them in 1921, reported the passages as about three and a half miles. The Druid altar on the tour route was identified in 1904 as a shelf of chalk left for a miner to stand on, and the well beside it was sunk by a Victorian brick manufacturer about 1864. The ghost is real as a story: guides have been pointing out murder and a haunted pool since the mine opened as a show place in 1900, and the caves still advertise a White Lady there. When fourteen investigators spent the night underground in March 1987 they found nothing paranormal, and natural causes for most of the noises.

Chislehurst Caves are not caves, and on the evidence that can actually be read they are not very old either. They are chalk and flint mines cut into the hillside above the Kyd Brook, on the edge of what is now the London Borough of Bromley, and they survive as three separate sets of workings that everyone who has studied them calls the outer, middle and inner series. The documentary trail is thin and late. Arthur Bonner, F.S.A., who had known the place since 1905 and completed a survey of it in 1921, could find no earlier mention than a local deed of 1737 referring to "the chalk cave" at the spot. What he did find was a mine in ordinary commercial life. It was leased in 1830 to a limeburner who sold lime and chalk and supplied gunflints to the Government. By about 1840 five limekilns were in regular use and chalk was also being sold to farmers to sweeten their land. The chalk from the middle and outer series was raised by winch through a shaft in each, and part of the machinery was still standing in the twentieth century; those two series were probably worked out by about 1850. The inner or remote workings had no shaft — the chalk was trolleyed out on the level to the face of the cliff — and ran until 1855-60, when a run of heavy roof falls blocked the headings and the mines were abandoned. The Ordnance Survey 25-inch sheet of 1862-63 records the place simply as a chalk pit, and marks an engine house and two surviving kilns. Two of the features the modern tour treats as ancient belong to that last industrial phase. The spiral ascent out of the middle series, which ends almost vertically above its start in the garden of a Victorian house called Woodlands, was cut about 1860 by G. H. Baskcomb, a brick and tile manufacturer who owned part of the caves and the land above them and used a stretch of the workings as an underground garden. The shaft shown to visitors as the "Roman" well was made by Baskcomb too, about 1864. The mine became a show place in 1900. Herbert Ryan, proprietor of the Bickley Arms Hotel, in whose grounds the entrance lay, had galleries cleared of the debris of decades and lit with coloured electric glow-lamps; a guide met visitors at the door, and beyond the reach of the lamps the party went on by candle. The attraction's own information page still states, without embarrassment, what the guides told the Victorians from the start: "the guides told the Victorians history of Romans, Druids and Saxons, Smuggling and Murder". The ghost story and the antiquity were part of the offer before either was investigated. In 1903 W. J. Nichols, a vice-president of the British Archaeological Association who lived in Chislehurst, read a paper on the workings to the Association's Sheffield Congress on 10 August. He described chambers with "altar-tables" cut in the chalk, "within a point or two of true orientation", and an adjoining chamber "apparently intended for the officiating priest"; he wrote that "a hundred indications suggest that it was a subterranean 'Stonehenge'", and reasoned outward from there to Druids, then Romans, then Saxons, each adding galleries to the last. The three sections of the caves still carry those names and the tour still stops at a Druid Altar. Nichols also recorded, in the same paper and without seeing the contradiction, heaps of flint chips with "the piece of rock on which the worker sat — just as they were left more than one hundred years ago", and among the flakes "four or five gun and pistol-flints ready for use". The reply came within six months. On 17 February 1904 the brothers T. E. and R. H. Forster read a paper to the same Association based on a proper mining survey. "That the caves have been a chalk mine, or rather a series of chalk mines, we have no doubt whatever," they wrote; the workings on their plan covered "an area of less than twenty acres". The middle series resembled old High Main coal workings near Newcastle so closely that they suspected an expert Tyneside pitman had managed it, and those workings were reckoned about two hundred years old. They explained the altar tables in one sentence: they are "evidently portions of the 'bottom canch' which have been left for the miner to stand on" while he worked the upper chalk. The beehive "altar recesses" come in pairs at right angles because that is how a miner opens a fresh pillar, and their domed ends follow the curve of a pick stroke. The well, they thought, was probably a "staple" — a subsidiary shaft sunk to prove the depth and quality of the chalk below — first used as a well when Baskcomb made his underground garden. The argument reached The Times in March 1937, after Sir Arthur Keith wrote that "the evidence of prehistoric toil at Chislehurst is much greater than that to be seen at Avebury" and asked for information. Bonner answered on 12 March with the documentary sequence above and one detail nobody had published: in 1921 he had taken two of His Majesty's Inspectors of Mines round the workings, unofficially, and they dated them by the methods they promptly identified as nineteenth century, with features introduced in 1830 and later, "and they were amused at the idea of antiquity for them". The so-called deer-horn pick marks, Bonner added, "are fanciful". The twentieth century then gave the mine the history it actually has. In the First World War the tunnels held ammunition for the Royal Arsenal at Woolwich; in the 1930s they grew mushrooms, and Kent Mushrooms Ltd cut a new entrance tunnel through the falls of 1855-60. When the bombing of London began in September 1940 it was the mushroom growers who organised the caves as a shelter, and a nightly population of around 5,000 built something close to a town. Every fifty or so shelterers elected a shelter captain to enforce the rules; a sanitation squad emptying the chemical closets was paid one shilling and sixpence an hour and was helped, on occasion, by small ponies. The charge was a penny an adult, and a pitch was allotted like a market stall: you cleaned it, and you lost it if you left it empty four days running. In October 1940 the Rector of the parish appealed for volunteers — "Helpers are wanted for the canteen, where about 1,000 cups of tea are made each night" — while the police were chiefly worried about communist leaflets. Special trains brought families from central London, and stations sometimes had to post "Caves Full" signs. At the height of the raids a peak of 15,000 was reported, mostly women and children. There were toilets, washrooms, a hospital of seven wards including two isolation wards, a chapel, canteens, a barber's shop, a gymnasium and a dance floor; the nickname was "The Chislehurst Hotel". On 1 January 1941 the European edition of the New York Herald Tribune carried a dispatch from a reporter who had gone down a cave shelter on New Year's Eve: "Ten thousand people, I was told by a shelter warden, were greeting the New Year in this one labyrinthine cave, 100 feet under the ground." A baby girl was christened in the cave chapel in 1941 with the name Cavena Wakeman, and changed her first name to Rose at eighteen, keeping Cavena as a middle name. The other side of the ledger is in a Medical Officer's report of 1944, which recorded the deaths of three babies from gastro-enteritis, put the shelter population at between eight and fourteen thousand, over half of them from London, and suggested closing the place temporarily until it could be improved. The shelter shut shortly after VE Day. After the war the mine reopened as an attraction and, through the late 1950s and 1960s, worked as a skiffle and rock venue: Subterranea Britannica's site report names Jimi Hendrix, the Rolling Stones, Pink Floyd and David Bowie among those who played underground. The BBC filmed Doctor Who there in 1972. None of that needs a Druid.

Chislehurst Caves are open and trading; the details below were checked against the operator's website on 17 August 2026, and should be rechecked before travelling, because two pages of that site disagree with each other about the last tour. Address: Chislehurst Caves, Caveside Close, Old Hill, Chislehurst BR7 5NL (the site gives BR7 5QX for sat-nav). Telephone 020 8467 3264. The entrance is beside the Bickley Arms public house, at the bottom of the hill. Entry is by guided tour only, and that is not a formality: the tunnels are a genuine labyrinth and the tour is lit by hand-held paraffin-style lanterns rather than by fixed lighting. Tours leave on the hour, last 45-50 minutes and cover about a mile of passage. The caves and café open Wednesday to Sunday, on bank holidays except Christmas and New Year, and every day during local school holidays; the first tour is at 10am and the "plan your visit" page gives the last at 4pm, while the ghost-tour page says the last tour is at 3pm. Tickets are sold at the ticket office on arrival, subject to availability; arrive 10-15 minutes early, because tours leave promptly. Groups should book, and get a guide to themselves. Prices in August 2026: adult (16-63) £10, senior (64+) £8, child (3-15) £8, under-3s free on public tours. The operator states that it offers no further discounts. Children must be accompanied by someone aged 18 or over. Practicalities. The floor is natural and uneven, "rather like cobbles"; pushchairs and wheelchairs are allowed but the site warns it will be hard work, and someone in your party must also carry a lantern. Guide dogs are permitted. It is cold underground all year — about 10°C — so take a jacket whatever the weather above. There is a free car park and free coach parking, a café and a gift shop. Chislehurst station is a short walk away and about 30 minutes from London Bridge or Charing Cross. Evening "spooky" tours run on Friday and Saturday nights and must be booked; the 90-minute Midnight Mystery Experience is sold as over-16s only. The overnight challenge that produced the site's best-known ghost stories no longer exists: it was stopped on safety grounds.