With its exceptional level of detail and clarity, Ordnance Survey’s Active Explorer Map 171 Chiltern Hills West is a favourite of walkers, climbers, mountain bikers, outdoor professionals and anyone else who needs to know exactly where they are.

The 1:25,000 scale allows plenty of detail, and the squares of the National Grid allow every bit of Great Britain to be given its own unique reference number. An abundance of features are displayed, including areas of interest, picnic spots, campsites and National Trails, along with National Park and Rights of Way information for England and Wales.

This Active version has a plasic coating across the paper, making it tough and weatherproof. It still folds easily so that it can be stowed in your pocket or rucksack.

Once you have recieved the paper map you will also be able to download the electronic version to your iOS or Android smartphone or tablet for use with Ordnance Survey’s OS Maps app. To claim the download you will need the unique code hidden by the scratch-off panel on the inside cover of the map. Please note that once this code has been revealed we will no longer be able to accept the return of the map for a refund or exchange. This does not affect your statutory rights.

Technical details

Ideal use:

Walkers, climbers, mountain bikers, outdoor professionals

Plastic-coated paper

1:25,000 scale for detailed mapping

Weatherproof and tough design

Mobile download available

National Park information

Foldable for easy storage

Areas of interest

National Trails

Picnic spots

Campsites

Map type: Waterproof

Map reference: OS Explorer map 171 Chiltern Hills West, including Henley-on-Thames, and Wallingford

Folded dimensions: 240 x 133mm

Other features