Photo 24. Namurian-Westphalian age sands, silts, shales and thin coals at Telpyn Point, between Amroth and Pendine, south Pembrokeshire coast. These sedimentary rocks represent the deposits of river deltas and coal swamps which were laid down along the south coast of the Wales-Brabant landmass which lay across much of mid- Wales in Carboniferous times.