The road through Glen Coe follows the bed of an extinct super-volcano, its horseshoe walls rising 900 metres above the A82. In February 1692, thirty-eight members of Clan MacDonald were killed here by government soldiers billeted in their homes, a betrayal that turned a remote glen into the most storied landscape in Scotland. Today the National Trust for Scotland protects 5,700 hectares of the Glencoe National Nature Reserve, a patchwork of alpine heath, remnant Caledonian pine, and scree slopes where red deer graze above the tree line. The glen sits at the western edge of Rannoch Moor, a 130-square-kilometre expanse of blanket bog and lochan that acts as a natural barrier between the central Highlands and the Atlantic coast. Glacial erosion shaped the Three Sisters — Beinn Fhada, Gearr Aonach, and Aonach Dubh — whose ridges funnel prevailing westerlies into the valley floor, creating microclimates that shift hourly. Birch and rowan cling to the lower slopes, while above 600 metres the vegetation thins to montane lichen and moss. The Aonach Eagach ridge, which forms the glen's northern wall, is classified as a Grade 2 scramble and remains the narrowest arête on the British mainland, with sections dropping 300 metres on both flanks. Guided walking routes through the Highlands typically depart from Edinburgh or Glasgow and incorporate Glencoe as a waypoint on circuits that include Loch Ness, the Glenfinnan Viaduct, or the Isle of Skye. Day excursions cover 160 to 240 kilometres by coach, with walking segments ranging from 30-minute valley strolls to two-hour ascents of lower peaks such as Pap of Glencoe. Multi-day itineraries extend into Torridon, Assynt, or the Cairngorms, where trails cross peat hags, ford burns, and traverse plateaux above 1,000 metres. Weather conditions dictate route selection — cloud base frequently sits below summit level between October and April, and rainfall exceeds 2,000 millimetres annually on the western slopes. The Glencoe Visitor Centre, operated by the National Trust, offers interpretation panels on the Massacre, geological formation, and Alpine flora, alongside a café and ranger-led talks. Parking costs apply at popular trailheads, including the Lost Valley car park and the Clachaig Inn junction. Mobile signal is intermittent beyond the A82 corridor, and the nearest hospital with emergency services is Belford Hospital in Fort William, 26 kilometres north. September and October bring autumn colour to the birch woods, while January and February offer the possibility of snow cover on the high ridges, though ice axes and crampons are essential for winter ascents of technical routes.