Portal:Scotland/Selected article/Week 13, 2010

The Flannan Isles (Na h-Eileanan Flannach, ) are a small island group in the Outer Hebrides of Scotland, approximately 32 km west of the Isle of Lewis. They may take their name from St Flannan, the 7th century Irish preacher and abbot. The islands have been devoid of permanent residents since the automation of the lighthouse in 1971. They are the location of an enduring mystery which occurred in December 1900, when all three lighthouse keepers vanished without trace.

The islands are split into three groups. The main cluster of rocks, which lie to the northeast, include the two principal islands of Eilean Mòr (English:Big Isle) and Eilean Taighe (House Isle). To the south lie Soray (Eastward Isle) and Sgeir Tomain, while the main western outcrops are Eilean a' Gobha (Isle of the Blacksmith), Roaireim (which has a natural rock arch) and Bròna Cleit (Sad Sunk Rock). The total land area amounts to approximately 50 ha and the highest point is 88 m above sea level on Eilean Mòr. The geology consists of a dark breccia of gabbros and dolerites intruding Archaen gneiss. In pre-historic times the area was covered by ice sheets which spread from Scotland out into the Atlantic Ocean.