With regards to photographs, I have a number of pictures of the cliffs around Ballybunion, right down the coast and the Mouth of the Shannon down from BallyB.

Thee are loads of caves at sea-level and there's the Devil and the Devil's Footstool.

The pictures were all taken from a boat and from that angle I wouldn't be sure which would be the exact location of the spot described in the song.

I can put a few on-line for a while if you like, just so you can get the general feel of the area.