An essential addition to your outdoor adventure kit, the Ordnance Survey OL17 Snowdon/Yr Wyddfa Map provides directions and key information of hotspots in Conwy Valley, Dyffryn Conwy and its surrounding areas. About OS Explorer Maps The OS Explorer Map is the Ordnance Survey’s most detailed folding map and is recommended for anyone enjoying outdoor activities including walking, horse riding and off-road cycling. Providing complete GB coverage, the OS Explorer Map series details essential information for the great outdoors, including youth hostels, pubs and visitor information. Rights of way, fences, permissive paths and bridleways are clearly shown, ensuring you have the most up-to-date information to get the most out of your time in the countryside. OL17 Snowdon/Yr Wyddfa Map features: North Wales Path, Isle of Anglesey Coastal Path / Llwybr Arfordirol Ynys Mon, Bangor, Betws-Y-Coed, Caernarfon, Conwy, Llandudno, Snowdonia National Park, Gwynedd, and Clwyd.