carabiners used for climbing are hanging from a rock, secured to the harness of a climber, colorful carabiners dangle from the

carabiners climbers hanging rock colorful secure harness equipment outdoors adventure safety gear climbing sport metal attachment extreme activity measures vertical cliff steel ropes carabiner clip clasp connection loop fasten ascent descent high altitude mountain risk sturdy durable snap link closure organization management critical weight bearing alpine fast belaying ascending techniques descending