The Flannan Isles are a group of uninhabited islands located off the west coast of Scotland, in the Outer Hebrides. They are known for their rugged cliffs, diverse wildlife, and historical significance, particularly the Flannan Isles Lighthouse, which was built in 1899. The islands are part of the larger St. Kilda archipelago and are often visited by birdwatchers and nature enthusiasts. The Flannan Isles are famous for the mysterious disappearance of the lighthouse keepers in 1900, an event that has inspired various theories and legends. The islands are also home to a variety of seabirds, making them an important site for conservation and ecological studies.