Pwll March (also known as Pen-y-Cwm beach) is at the northern end of Newgale Sands. It can be reached at low to mid-tide by walking along the shore from Newgale, and at other times via the coast path. Alternatively, there is some roadside parking at Penycwm, from where a public footpath follows the line of a former tramway down the valley to the beach.
The beach is sand, with rocks and plenty of rockpools, and backed by cliffs of sandstones, conglomerates and shales. Further to the north is the small beach of Cwm-bach which can only be reached along the shore at low tide.