Is this about the same time that the circular earthworks became common in what is now England? I often wondered if they were part fort and part cattle corral.
>>Is this about the same time that the circular earthworks became common in what is now England? I often wondered if they were part fort and part cattle corral.<<
If your cattle were your most valuable asset, you would want a defendable place for them if you were in danger of a raid.
I believe castles also served as a secure place to store grain and such.