Experts say the finding sheds light on the details of how castle-building methods developed during the rule of Hideyoshi (1537-1598), who unified war-torn Japan. The stone wall, which is 1.8 ...

Hitoshi Nakai, professor emeritus of the history of Japanese castles at the University of Shiga Prefecture, said, “It is miracle that a stone wall of this size was unearthed.” “It is certain ...

ETH Zurich researchers have trained an autonomous excavator to construct a dry- stone wall 65m long and 6m high out of random rocks and building waste. Using sensors including cameras and lidar, it ...