Eilean Chathastail protects the only harbour on Eigg at Galmisdale.

Eigg lighthouse was built on the island in 1906 by brothers David A. and Charles Alexander Stevenson.

In July 1884 the geologist and writer Hugh Miller arrived at the Eilean Chathastail anchorage on board the yacht Betsey.

His contributions were later collated and published as The Cruise of the Betsey in 1856.

This is marked by a burial enclosure on Maol an Eilean, the island's highest point.