This scarcity of large stones may explain why Neolithic and Bronze Age communities used small stones, termed miniliths, in the two Exmoor circles and in other monuments within the region. There are nevertheless other constructions in the area, such as the clapper bridge at Tarr Steps and the three-metre Long Stone at Challacombe, which do use locally sourced large megaliths. This suggests that larger stones would have been available had the sites' builders desired, and that the use of miniliths was therefore deliberate.