OS Explorer Maps OL28, OL44 & 112 Dartmoor is 954 square kilometres (368 square miles) of moorland punctuated by exposed granite tors. Although parts are a military firing range, there are still ample opportunities for walking, running, cycling, riding & climbing. This map bundle contains all 3 OS Explorer Maps for the National Park with a discount of 20% compared to the cost of buying them individually, & is available in both standard & weatherproof ' Active' versions. Whatever activities you plan on your visit, you can make the most of it with Ordnance Survey maps.