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Category B Listed lighthouse. Davaar island was previously known in the 15th century as Sanct Barre. The cost of construction was estimated at around �4,000 and John Barr & Co. built the 20m lighthouse in 1854. James Milne & Son made the lantern and the leadwork was made by John Marshall. David and Thomas Stevenson were the engineers. The light used a mercury vapour lamp in conjunction with catoptric mirrors driven by clockwork machinery. It now flashes white twice every 10 seconds. 37m above sea level, it has a range of 15 nautical miles. The light was automated in 1983. As with many others, the Lighthouse Keeper�s Cottages have been converted into holiday lets. At low tide, Davaar is connected to the mainland by the Dhorlin, a shingle bank that is a 30 minute walk from lighthouse to mainland.