Schedule periodic region restores.
TimedRestore is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
The above website does contain software which has not been directly approved by dev.bukkit staff and as such require the following disclaimer: Development builds of this project can be acquired at the provided continuous integration server. These builds have not been approved by the BukkitDev staff. Use them at your own risk.