We're still near the western end of the Dingle Peninsula. This pocket beach is confined between rocky cliffs of Silurian silts and sands (just slightly older then the Dingle Group at Coumeenoole). I suppose this is what gives rise to the green and red stones on the beach.
Behind the beach is a low eroding bluff of soil and rock (glacial drift?), which resulted in an interesting berm of weathered material and beach cobble. The parking lot and beach access was shored up with a rock wall of reddish stone, which I assume came from very close by, although it looked a little Devonian to me!