Ключевые слова: action, active, adventure, artificial, background, board, bolted, bouldering wall, button, challenge, climb, equipment, extreme, extreme sport, facade, fiber, foothold, game, grunge, grungy, handhold, high, hold, holes, multiple, panel, pattern, playground, protrusions, recreation, ridge, rock, rock climbing, rough, rugged, sports, stain, structure, strut, stub, stud, surface, synthetic, texture, tip, toe, toehold, vertical, wall, wood room,