Now this question has been sitting at the back of my mind and has recently jumped up into the forefront but what can we expect in reference under the surface of Tyria? I have heard before that the world was hollow but that leaves a lot to wonder. Is there just the surface with a couple of miles of ground to make up an underground but there is absolutely nothing in the center? Physics would be off...especially when science is still a big thing in the world. Or is it still predominantly rock that has vast amounts of open areas but the very center is the molten core (that would satisfy the demands of physics and such)? What really makes me wonder is three things I have run across. In Divinity's Reach, you go to the celebratory area (where you first encounter Scarlet) and you see the big hole in the ground. How deep does that go? What's the story behind it? Rata Sum, you go to the very bottom level of the cube city and you can see that there is more deeper and deeper. Again, what is the story? And the last example is when I recently ran across S.S. Topsy (Tipsy?) Turny (Turvy?). Just that area alone hints at a time that people had lived there. Ran across houses built into the walls of the caverns and of course the depths that are there (but you die if you go to deep). Is there any lore to define this? Or is this one of those things that we may have to wait on ArenaNet to explain in a new LS or expansion?