Sandbags can be found immediately before an elemental invasion of a capital city during the Elemental Unrest. They are to be placed around the city in an effort to shore up the last line of defense before the elementals actually start spawning.
Patches and hotfixes
- Hotfix (2010-11-15): Activated with phase 4 of the Elemental Unrest.
- Patch 4.0.1 (2010-10-12): Added.