where can you find ascalon chest

I got 2 ascanlon keys from monster drop. But I can't find any ascalon chests in old ascalon. Are they inside the great northern wall mission?

Ascalon chests are located EVERYWHERE east of the shiverpeaks in the ascalon area. Maybe you just got some crappy instancing. thats all. They're there. Just look. And IMHO, keys below steel keys usually don't net nothing too jaw-dropping. Just a FYI.

--The Shim

There is one in the Great Northern Wall mission. It's in the area outside of the gate where all the Charr come rushing in... (it's fun to make them go BOOM with my ele)