how are slot canyons formed
Slot canyon. A slot canyon is a narrow canyon, formed by the wear of water rushing through rock. A slot canyon is significantly deeper than it is wide. Some slot canyons can measure less than 1 metre (3 ft) across at the top but drop more than 30 metres (100 ft) to the floor of the canyon. Many slot canyons are formed in sandstone and limestone rock, although slot canyons in other rock types such as granite and basalt are possible.