Stone Wall (Age of Empires II)

Stone Wall is a type of strong defensive structure found on Age of Empires II. Almost every civilisation can build it, with notable exceptions being the Goths (who can only build Palisade Wall, and cannot even construct gates). They are available upon upgrading to the Feudal Age from the Town Center. When the are built around the outside of a town, it makes the town very difficulat to attack, as a)Any attacking units would have to destroy the wall before attacking any of the other buildings and b)It offers a warning to the town that their opponents are attacking. Several opponents in Age of Empires II use Stone Wall in their defences; however it is usually upgraded to Fortified Wall by the time you get round to attacking them.

Stone Wall can be upgraded to Fortified Wall at the University