![OS Explorer Map Active (457) South East Lewis/Taobh an Eardheas Leodhais (OS Explorer Active Map)](http://monsterbookshop.co.uk/cdn/shop/products/9780319473092.jpg?v=1702514122&width=1445)
OS Explorer is the Ordnance Survey's most detailed map and is recommended for anyone enjoying outdoor activities such as walking, horse riding and off-road cycling. The series provides complete GB coverage and can now be used in all weathers thanks to OS Explorer - Active, a tough, versatile version of OS Explorer. The OS Explorer Active range now includes a digital version of the paper map, accessed through the OS smartphone app, OS Maps.