THE ROCKS: Corstorphine Hill is a long ridge of tough dolerite, part of a series of igneous intrusions formed across this area around 330 million years ago. It has been shaped by ice flowing eastwards over the hill during the ice age, leaving behind ridges, striations and roches moutonnées – the finest in Edinburgh. Low down on the east side an old quarry exposes some of Edinburgh’s sedimentary rocks, giving a glimpse into the geological variety of this area.

THE WALK: A circular walk along the ridge and back, exploring the contrasting sides of the hill. Distance 6km. This is classified as an Easy Walk, although the causeway can be slippery in places. It may be wet, windy or cold. Come equipped with strong footwear and waterproof clothing.

MEETING POINT & ROUTE: Entrance to the Corstorphine Hill Local Nature Reserve, on Corstorphine Road at the junction with Balgreen Road. Grid reference: NT214730 | Nearest Postcode: EH12 5ST | What3Words: jeeps.refuse.feels | Route Map.

CORONAVIRUS – IMPORTANT INFORMATION: During Geowalks activities, the aim is to keep everyone safe and to minimise the risk of transmission of Coronavirus. Everyone has a duty to minimise the risk to themselves and others. All participants must read this document “Geowalks: Coronavirus Pandemic 2020-2021: Information for participants on short walks (version 2.0 15Mar21)” and you can only attend a Geowalks activity if you have read and agree to follow the procedures outline, and accept the risks involved.

Most importantly, do not attend if you are experiencing any symptoms of Coronavirus, or if you, or anyone you have been in close contact with, has tested positive for Covid-19 in the last 14 days. The main symptoms are a new continuous cough, fever or loss of, or change in, sense of smell or taste.