Complex sentence: The area is relatively unpopulated, although along its southern periphery there is an almost uninterrupted ribbon of seaside towns: it is extremely popular with walkers, having one principal long distance footpath, the South Downs Way, and many interconnecting ones.
Split into simpler sentences: The area is relatively unpopulated, although along its southern periphery there is an almost uninterrupted ribbon of seaside towns. It is extremely popular with walkers, having one principal long distance footpath, the South Downs Way, and many interconnecting ones.