Track going across the map, a little ways down. Keep digging and you'll hit it.
I recreated the shrine (or temple) structure from the last screenshot on the Steam store page for Terraria. Not an exact copy, but it does summon angry spirits. Well... angry wraiths if you want to be specific.
You may have just won yourself an Arkhalis! Many chances to wield one of the rarest and unique weapons in the game! Results not guaranteed.
A quickie arena near by the spawn point.
A perfect location to pick a fight with a giant plant.
The spawn point is located right next to some interesting land features that are perfect for a floating base. Very Secure!
This is totally not in this world. Just a title screen.
Up in the sky somewhere. Try out a Pearlwood set before hardmode. It's surprisingly not bad!
Anyone see a probe floating around here?