Marros west cliffs

Marros Sands to Amroth

Just east of Amroth, we cross the county boundary into Carmarthenshire. The fine beach of Marros Sands, some 4 km east of Amroth is relatively isolated between Telpyn Point and Ragwen Point. There is no road access; the only way to get here is along the coastal paths, along the beach at lowest tide, or by boat.

The cliffs immediately south of Top Castle hill fort are comprised of shales of the Namurian-age Bishopston Mudstone Formation (Middle Shale Group). Erosion along joint planes has produced a series of scalloped caves and collapses, and remnant low stacks and reefs on the wave-cut platform.

Structurally, these rocks are almost completely undisturbed, compared with the thrusts and folds encountered just a few miles to the west, between Amroth and Tenby.