A drugs gang built an intricate hidden cave on a Welsh beach to store their illicit gains.
The ring was headed by Soeren Berger-Arnback, a Danish millionaire. It dug the bunker in a remote spot on the coast between Moylgrove and Dinas Cross.
Police became suspicious when a few men started arriving in the area and offered bizarre explanations.
During their investigation of Ceibwr Bay they discovered a watertight passage and a hidden cave with wooden beams, fibreglass, and beams.
Shortly afterwards, they spotted a hiker in the area who ditched his rucksack and ran into a nearby field, Wales Online reports.
It contained a high-powered radio which was being used as part of a huge drug smuggling operation run by Berg-Arnback.
His ability to alter his appearance had allowed him to escape capture after he had been on the loose for over 11 years.
In his native Denmark, journalists had given him the nickname “the man with the rubber face”.
The cave, as it turned out, had been secretly created with the intention of housing tonnes of cannabis worth millions of pounds.
In 1984, members of the drug ring were sentenced to jail, including Berg-Arnback. He was known as Sam Spangaard while he lived among the west Wales locals.
BBC journalist Bob Humphrys was in Swansea Crown Court during the summer 1984 when Berg-Arnback went to prison.
He wrote in autobiography Not a Proper Journalist: “As the Danish drug smuggler yawned and studied his nail at the mild inconvenience of a couple of years free board and lodging courtesy of Her Majesty before hopping back to his private island and swollen bank account, we knew we had a humdinger of a television documentary in prospect – the story of a gang who’d quarried a huge hole in Seal Bay, a remote west Wales cove, with the intention of filling it with three tonnes of cannabis valued, at early eighties prices, at around six million pounds.
“Sadly, however, they hadn’t factored in that in Wales you could dig an undercover silo with all the secrecy of a base for extra-terrestrials in New Mexico and there’d still be someone who’d stumble on it with a muttered ‘what’s this by ere, then?’”
Berg-Arnback was sentenced to eight years behind bars for conspiring to smuggle drugs into west Wales, and his whereabouts since his release are something of a mystery.
Wales has a long history of pirates and drug smuggling over numerous centuries – its long coastline making a popular spot for criminals to bring things ashore.