Sites such as Desalpar, Dholavira's have yielded massive stone fortifications and the acropolis is extensively fortified with tall standing walls and furnished with ramparts and gateways. Sites such as Mohenjo Daro and Dholavira exhibit some outstanding examples of Bronze Age Indian fortifications with their thick tall walls, with the walls made of burned bricks at some places solid mud-brick embankment have been discovered which run for twenty five feet (7.5 meters) without reaching the bottom. These forts also feature square and round bastion and contain a citadel constructed at an elevated height. Banawali is among the earliest sites in the world where moats have been discovered. Fortified towns have been excavated from Indus Valley civilisation with thick and tall walls.
