Went out for a run in the drizzle today around the Arddu area (between Nantmor and Croesor). This area is probably my favourite area in Snowdonia. Even though it can be reached in less than 30min from the road the area feels remote due to the lack of paths and people.
If esoteric bouldering or micro cragging is your thing, then this is a premiere destination. The place is full of little out crops and compact walls. At each blue dot on the map below then is a crag/boulder of some description. None of which are in any guidebook. Get exploring!