A traverse of the high tops of the Pentland Hills, with great views of a landscape fashioned by geology.

Note 9:30am start, but the clocks go back!

THE ROCKS: Along the top of the Pentlands we see a selection of igneous rocks, part of a complicated and largely hidden story of volcanic activity from 410 million years ago, when a number of volcanoes erupted in this area. Later, these rocks were disturbed and eroded, giving a complex pattern on the ground. Descending to Loganlea we briefly meet both older and younger rocks – formed by ocean sediment and tumbling rivers.

THE WALK: This is a moderate walk, total distance 12 km and climbing a total of 480 metres. From Flotterstone we climb steeply to the summit of Turnhouse Hill and along the grassy ridge to Carnethy Hill, before descending to Loganlea and picking up the road back to Flotterstone. I have classified this as a Moderate Walk: not always on paths, may be rough or slippery underfoot at times. It may be wet, windy or cold. Come equipped with strong footwear, waterproof clothing and something to eat and drink.

MEETING POINT & ROUTE: Flotterstone Visitor Centre Car Park, just off the A702 (close to the Flotterstone Inn) at 10 am. Grid reference NT 232 630 | Nearest Postcode: EH26 0PR | What3Words: incorrect.moons.kickers | Route Map.