Bouldering is the sport of climbing no further than up to a drop-jump height. No safety gear such as ropes and helmets are needed here. The climbing walls reach up to maximum 4,5 meters in the air. In case of a drop, special mattresses will cushion the fall. The varying levels of difficulties on different routes must be tackled by muscle-power only.
When bouldering, all major muscles of the body are commanded - and the fun factor is high, too.

Find out more here