The SATMAP SD Card fits into the SATMAP Sports GPS Unit, to give specific area coverage in 1:25k and 1:50k of Ordnance Survey Data.
The large majority of the Pembrokeshire Coast National Trail is within the Pembrokeshire Coast National Park, and it passes through 17 Sites of Special Scientific Interest and two nature reserves, as well as traversing some of the most spectacular coastal scenery in Britain. The continual rise and fall of the sea cliffs results in a physically challenging walk, but the rewards of superb cliff-top sea views, contrasting with the gentler shoreline of the Milford Haven estuary, ensure this walk remains one of the premier long distance paths in the country.