The Cache
The 34th cache in the BRPT is halfway between #33 and #35 on Coliemore Road. Funny that While you are passing by, be sure to take a peek at Coliemore Villas through the nearby Archway via the little-known public access-way --- which will probably be harder to find than the actual cache itself. You are looking for a small, black, sample container.
The Blackrock Power Trail Series (BRPT)
The series started its life in Idrone Terrace on Dublin Bay behind Blackrock Village and has now spread both north-west and south-east from the original Cache.