Jason Gilchrist on Twitter: "Holyrood Park Geowalk w @Geowalks for Edinburgh Napier University walk. ↖️Glacial erratic, ↗️sandstone quarry, ↙️Dunsapie Hill & Loch, ↘️walking on lava. #EdinburghNapierUniversity # Geowalk #geology ...
Guided Walk: St Abb's Head – Scottish Geology Trust