Analysis of information sources in references of the Wikipedia article "Dalkey Quarry" in English language version.
The word 'quarry' can often turn some people off (hope you got this far!), me included, but Dalkey is much more appealing than most. It's very green at the base, in fact, it's like a maze of narrow paths, and some points taking you through head-high gorse. The rock type is granite, so makes a change from the quarries in this country, which in my experience are predominantly limestone, grit or slate. It's pretty large being split into three areas (West Valley, East Valley and Upper Tier) and also has a huge variety of routes – slabs, cracks, chimneys, steep blocky overhangs, you name it.