After completing the quest Old is New Again, you are awarded the "Desperately Seeking Lemuria" Badge. It's under "Miscellaneous" badges, on page 3 in the 3rd row. It's not currently listed on the Badges page and I don't know the proper way to edit those images and don't want to mess with those lists, where I don't know what I'm doing.

If anyone who does wants to add that it would be appreciated. Hopefully this image helps too

Name:  badge.jpg
Views: 195
Size:  59.7 KB