Thames Path: with Ordnance Survey mapping (A-Z Adventure Series)The A Z Adventure series features the accuracy and quality of Ordnance Survey's 1: 25000 mapping in a convenient book, therefore eliminating the need to fold and re fold a large sheet map to the desired area. OS 1: 25 000 is Ordnance Survey's most detailed mapping, showing public rights of way, open access land, national parks, tourist information, car parks, public houses and camping and caravan sites. The Thames Path is a National Trail which covers