The Obelisk is a series of three structures floating in the skies above the Ark, colored green, blue, and red. The Green Obelisk is located in the southeast near the swamp in the Eastern Forest, the Blue Obelisk is located in the northwest in the snow on top of Whitesky Peak, and the Red Obelisk is located in the southwest near the coast of the Southern Jungle. Once all the Artifacts from the caves and trophy items from specific creatures are gathered you can open a portal to the boss arena of a specific boss. The Obelisk also allows for the transfer of characters between servers.
Currently Character Transfer does not work on all servers and is bugged in some cases. Reports of complete character deletion is reporting upon upload.