OS Explorer Active Maps The OS Explorer Active map range are Ordnance Survey's most detailed maps.Laminated with a weatherproof finish, also suitable for dry-wipe pens. 1:25 000 scale: 4cm on the map = 1km on the ground.They are ideal for outdoor activities like walking, horse riding and off-road cycling.They show roads and rights of way, permissive paths and bridleways, plus essential visitor information. Free digital version includedThe area covered is home to popular destinations such as: Dartmoor National Park The Dartmoor Way The Two Moors Way Princetown Okehampton Buckfastleigh Widecombe in the Moor Haytor Rocks Lydford GorgeDartmoor offers something for everyone from the causal walker taking a stroll up to Haytor Rocks to the more challenging 37 miles of the West Devon Way running from Okehampton to Plymouth which can be done by foot or bike. There?s plenty of opportunities to relax and enjoy the views or challenge yourself with rock climbing or bouldering on the many Tors.