Eigg has been owned by the Isle of Eigg Heritage Trust since 1997, as a community ownership; another stakeholder, the Scottish Wildlife Trust, manages the island as a nature reserve. In April 2019, National Geographic discussed the island in an online article, estimating the population at 107 and the average number of annual visitors at 10,000. The larger part of the island is formed from olivine-phyric basalt flows erupted during the Palaeocene epoch. Together with flows of hawaiite and mugearite, these form the Eigg Lava Formation. The Sgùrr is formed from porphyritic rhyolitic pitchstone erupted into a valley during the Eocene epoch. It displays columnar jointing formed as the lava cooled. Outcrops of an underlying conglomerate containing clasts of Torridonian sandstone and basalt are visible in places. These igneous and sedimentary rocks are collected together as the Sgùrr of Eigg Pitchstone Formation. More information...
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