The Rainbow Slab Area is one of the best known locations in the slate quarries. It is home to the iconic feature of an immaculate slab of rock with the eponymous ripple arcing across it. This is one of the finest single slabs of rock in the country and it has been developed with a set of routes to match.
The rest of the area doesn't quite match up to this stunning slab although there are still plenty of good routes dotted about. Getting to them can be quite complex as some of the levels are only reachable by abseil.
The Rainbow Slab itself is mostly old-school trad classics with minimal or no bolting giving run-out and technical routes requiring deft footwork, strong fingers and a very steady head. Elsewhere in the area there is more sport climbing on offer which tends to be on vertical and featured terrain.