As the name implies, Eilean Taighe hosts a ruined stone shelter. Eilean Mòr is home to the lighthouse and a ruined
chapel dedicated to
Saint Flannán, which the lighthouse keepers referred to as the "dog kennel" because of its small size. These ruined
bothies were described collectively by the
Ancient Monuments Commission as The Bothies of the
Clan McPhail, or Bothain Chlann ‘ic Phaill. It is not entirely clear to which St Flannan the chapel pays honours. It is likely that the honoree was either the 7th-century Abbot of
Killaloe, County Clare, Ireland, or alternatively, the half brother of the eighth century
St Ronan, who gave his name to the nearby island of
North Rona. There was also a certain Flann, son of an Abbot of
Iona, called Maol-duine, who died in 890 and may also have lent his name to these isolated isles.
Martin Martin (1703) lists a number of unusual customs associated with regular pilgrimages to Eilean Mòr, such as removing one's hat and making a
sunwise turn when reaching the plateau. ==Wildlife==