Bouldering is unroped climbing, which is usually lower in height than other climbing routes, both indoors and outdoors. Indoors the highest bouldering problems are around 5 metres high. There are often crash mats below to help protect you if you fall off. Indoors, these mats are provided, whereas outdoors, you carry a bouldering mat to the boulder with you.
People often mistake Bouldering as ‘practice’