Sheet number OL15 in the OS Explorer map series is the ideal map for exploring the Purbeck coast and South Dorset. The Jurassic coast is a major draw for many outdoors enthusiasts and the beautiful countryside of South Dorset is perfect for walks and rides. The peninsula of Purbeck is made up of 60 square miles of sculpted shores, steep cliffs and sandy beaches a perfect location for all kinds of walking, from gentle ambling, to serious tramping. If youre up to the challenge, why not cycle the 47-mile trail around Purbeck? Take the leisurely option with a week-long winding trip, or set off at a serious sprint, completing the course in one or two days.