The area looks great so far, but I found a few small issues that may need to be touched up. Firstly, there's a few 'piles of bones' textures that look a bit off, one is even floating in mid air(the one on the far eastern path leading south towards the mine entrance).
**Edit** There is also a tree partially floating in mid air directly across from these floating bones.
The transition to the xvart village does not work if you try to click on it, but it does if you manually walk into it using WASD.
As for the new interior...
... it looks really good, I like the toggle-able torches/lanterns/brazier. It also looks really big! And I'm currently trying to figure out how to get to the areas where I can hear things lurking about(which can be heard from the northern cave)... if there's a puzzle to be solved in the new mines to gain access to the southern part of the map, I can't figure it out, although I doubt this is the case. My initial guess was that this area is perhaps the start of the Ulcaster ruins, but I'm still exploring the surrounding maps to find out if something else has been opened up and connected to this area.... dun dun dunnnn!
Nice work(to whoever created this one)!