Flannan Isles

Flannan Isles Lighthouse is located on the highest point on Eilean Mòr, one of the Flannan Isles in the Outer Hebrides.
It is best known for the mysterious disappearance of its keepers in 1900. When the lighthouse tender Hesperus reached the island on 26 December 1900, the crew found that the flagstaff had no flag, all of the usual provision boxes had been left on the landing stage for re-stocking, and more ominously, none of the lighthouse keepers were there to welcome them ashore. The men scoured every corner of the island for clues as to the fate of the keepers. They found that everything was intact at the east landing but the west landing provided considerable evidence of damage caused by recent storms. Robert Muirhead, a Northern Lighthouse Board superintendent, conducted the official investigation into the incident, but was inconclusive for lack of evidence. No bodies were ever found, speculation was rife and everything from sea monsters to ghosts to a knife feud were posited. The truth is probably a lot more mundane, but a good story has legs and this one is a world class runner.