This type of climbing is unsuitable for beginners because of the sheer difficulty of most of the climbs. The climbs are usually less than 6m in height and are often at the bottom of a crag or on detached boulders in the vicinity of a crag. Problems of all difficulties can be practiced in relative safety. Large padded mats are often used to fall onto. Bouldering is a good way of developing strength and technique for traditional and bolted climbing.
Specific guides are available outlining and grading numerous boulder problems.