In 1789, on a green spit of rock off the eastern coast of Scalpay, the Northern Lighthouse Board lit one of its first four lights. Eilean Glas was one of them - the first lighthouse anywhere in the Hebrides. For the captains who had been groping along the Minch with charts that were half wish and half rumour, the appearance of a steady beam off Scalpay's eastern shore was nothing short of a revolution. The tower has been replaced and rebuilt since. The location, the work, and the meaning are unchanged: this is where the modern lighting of Scottish waters began.
The Commissioners of the Northern Lights, established by Act of Parliament in 1786, commissioned four initial lighthouses to begin lighting the long, lethal Scottish coast. Eilean Glas was one of them, alongside Kinnaird Head in Aberdeenshire, Mull of Kintyre, and North Ronaldsay in Orkney. The Scalpay light was built by Thomas Smith, the first engineer to the Commissioners, with a young Robert Stevenson - later the grandfather of the writer Robert Louis Stevenson - working alongside him. The Stevenson family would go on to design most of Scotland's lighthouses across four generations. They began here. The tower you see today, with its distinctive red and white horizontal bands, is a later structure raised in 1824 by Robert Stevenson himself.
Eilean Glas - 'green island' in Gaelic - is a small tied peninsula on the east coast of Scalpay, joined to the main island by a narrow neck of land. You reach it on foot. From the village near Scalpay's bridge, a lane runs southeast and then peters out at Kenavaig; from there a hike of around two miles over peat and grass leads to the lighthouse. The Northern Lighthouse Board still owns and operates the light, now automated. The keepers' cottages and outbuildings are held by the North Harris Trust and the local Eilean Glas Trust, who have worked to preserve them. The whole site is a Category A listed building, the highest level of statutory protection in Scotland.
Before 1789, ships running the Minch did so by dead reckoning, prayer, and the experience of pilots who had grown up watching the sea from these shores. The number of wrecks along the Outer Hebrides through the 18th century is sobering. Eilean Glas did not end shipwrecks - the rocks around Scalpay are still studied by maritime archaeologists for what they swallowed - but it began the slow, century-long project of making the Atlantic edge of Scotland a navigable place after dark. Stand on the headland at dusk now and you can see lights blinking along the coast in every direction. Each one of them is descended, somehow, from the first that flickered into life here when Robert Stevenson was seventeen years old.
57.8569°N, 6.642°W on the eastern tip of Scalpay, southeast of Tarbert. Cruise 1,500-3,000 ft for the best view of the red-and-white banded tower on its green peninsula. Stornoway (EGPO) lies about 25 nm north on Lewis. The Shiant Islands sit about 5 nm east across the Minch - useful waypoints when navigating the strait. Expect lively winds funnelled between Scalpay and the Skye coast to the south.