Rotten Island lighthouse, lighthouse in Ireland
Rotten Island lighthouse is a 14-meter structure in County Donegal with a white tower and red beacon sitting on a small island off the northwestern coast of Ireland. The granite foundation and simple design show robust construction suited to withstand coastal weather, visible both from the sea and from nearby beaches.
The lighthouse was built in 1838 by renowned engineer George Halpin Senior with a fixed light system. In 1910 the light was changed to flash, and by 1959 it became fully automated when keeper William Hamilton departed.
The island's name possibly originates from a hermit called Naomh Rotain who once lived there, though the exact origin is debated. This unusual name has become part of local identity, connecting people to the place through language and shared maritime tradition.
The island is accessible from the nearby beach when tide is low, allowing visitors to approach the structure close up. Plan visits during calm weather since sea conditions affect access, and wear sturdy footwear for walking on rocks.
An antique oak clock installed during construction in 1838 reportedly operated without repair for over a century, though its current location and condition remain unknown. This hidden component speaks to the craftsmanship and durability built into the original construction.
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