Crags in Karelia are sport and bouldering. Where's hundreds of routes and area is actively developing by local climbers.
Where's a small guidebook for Treugolnoe.
You can try to ask publisher if it's available for shipping outside Russia via email shop@tema-sport.ru or phones (495)604-42-26 and (903) 735-58-08.
Accommodation is wild camping. Where are few camping sites, but I have no idea how whey are operated. And they are located by lakes rather than next to crags. In Russia climbers set a camp themselves as close to the crag as possible and live where while climbing. Where's vipera snakes in swamps, so camp high.
Approach of up 10km from station or parking. Few crags are next to the road, but generally be prepared to walk.
Last time I've been to Karelia in 2006 and it was awesome!
Post edited at 11:08