There's a map of the proposed sites here:
I looked up Joyce but he doesn't have an entry for Nevitt.
North-west, about a mile from Nevitt, is Knockbrack hill, with a prehistoric (possibly passage tomb) cemetery on its northern slopes. Fourknocks is another 3 miles north-west. West of Nevitt, about a mile again, is another prehistoric mound.
Lusk or the Naul are the nearest big towns if you want to google earth it, though I think the maps for there are lo-res.
Fourwinds has been to the area, Knockbrack being an entry in his first book.