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Flat Holm Foghorn

Erected about 250m away from the main lighthouse in 1908, the compressed gas foghorn protected shipping along the Bristol Channel/Severn Estuary for many years.

Decommissioned in 1988 (presumably the same time the lighthouse was automated) the foghorn is still fully functional, however was last sounded in the 1990s for a television documentary. The reason it hasn't been sounded since is that the building's roof is now unstable and sounding the powerful horns could cause enough vibration to cause them to fall through the now propped up roof.

Many still remember with nostalgia the sound of the horn - which could be clearly heard over a wide stretch of the South Wales coastline.