The 17th-century Ashdown House is set in the Lambourn Valley and is the starting point for our exploration of this ancient landscape.

As we walk, we will take in some of the interesting features of the Lambourn Valley’s geological history over the last 100 million years. We will see a chalk valley (now with no water flow), sarsen stones and beautiful views.

This is a gently paced walk with opportunities to take in the scenery and geology. Walkers are welcome to bring along snacks and drinks to enjoy along the way.

Walk leader/organisation: Lesley Dunlop, Berkshire Geoconservation Group

Walk Information

  • Booking: Free – Booking essential – 20 places
  • Distance & approximate duration: 3.2 miles (5.2 km) – 2 hours
  • Difficulty: Fairly easy (some gentle inclines, steps/stiles).
  • Accessibility: Suitable for older children (12+). Under 18s must be accompanied by an adult (see useful information). Not suitable for wheelchairs.
  • Dogs: Dogs on leads welcome
  • Refreshments: Bring snacks and drinks as needed. There are no amenities on the route (see below).
  • Toilets: There are no public toilets on the route (see below).
  • Meeting point: National Trust car park off the B4000, Oxfordshire; nearest postcode for Ashdown House: RG17 8RE. What3words: newest.really.relegate. OS grid reference: SU 284 823.
  • Public transport: There is no Sunday bus service.
  • Parking: Free National Trust car park off the B4000, Oxfordshire.

For general booking information, health and safety advice, terms and conditions please see our useful information page.

Further Information

The village of Ashbury is less than 10 minutes’ drive north on the B400; there is a pub in the village offering refreshments and toilets, see Rose and Crown at Ashbury.

Ashdown House is open Wednesdays and Saturdays.

The Berkshire Geoconservation Group is a volunteer group that works with local authorities, landowners and the general public to safeguard our special landscape for future generations and to promote understanding of its geology and geodiversity. For information, see Berkshire Geoconservation.

This walk is brought to you by our partner:

Sarsen stones on the downs above Ashdown House © Lesley Dunlop