- last post: 01.01.0001 12:00 AM PDT
I think it's a giant AOL CD. In the past, AOL existed, and constanty annoyed the Forerunner with the promise of 1000 free hours of internet access. To get the entire Planet Earth to sign up, they sent one giant disc here. The Forerunner then buried it, hoping to protect the universe. The AOL employees, not being sentient life, survived the firing of the Halos and continue to annoy us today.