Requirements: Level 3 Construction
Action: Drop some villagers on the ruins on the bottom right of the map. They will begin restoring the temple. Again, don't wait for this to be completed. If puzzle #9 is complete, try dropping villagers on the completed temple and see what they do.
Description: "Inspired by their spirituality, your builders successfully restored the ancient ruins that have mystified them since their arrival. They're certain this is how the stone temple once looked in the distant past..."