Do you mean the one on page 43? Looks as though there's a boulder-cist? That could narrow down the search a bit, plus its proximity to that house.
There's a general mention of that style in the text on pages 48-9 being in Co Kerry.

None of the photos used as the title page to a new chapter are mentioned in the index. Infuriating, isn't it! ( I know p.69 is the Castlestrange stone and from that, the photos in the book are fairly old. It's sat on a metal grille now.)

Rune