At that time the castle had two moats , which still exist .
Hideyori 's engineers created an outer moat by cutting a channel between the canal that existed to the west and the Nekoma stream which flowed from south to north on the eastern side .
At that time the castle had two moats , which still exist , and Hideyori 's engineers created an outer moat by cutting a channel between the canal that existed to the west and the Nekoma stream which flowed from south to north on the eastern side .