the south west coast path in dorset between durdle door and lulworth cove

albion arch bats beach britain chalk channel cliffs coast coastal coastline country cove descending distance door dorset durdle england erosion follows fossils great head heritage hikers hiking jurassic jurrassic kingdom landscape limestone looking lulworth man nature nothe ocean outdoors owar paleontology path people rocks sea sedimentary site south southern steps united village visible walking west weymouth white world