It's roughly 111 x 84 and 46~ tall.
I'm presently looking at it in buildbox, it looks more like you cut a chunk out from the world, made a sand hill into a volcano, and added just a few houses. Pompeii was covered in a thick layer of soot. Going from a historical standpoint, the volcano (Mount Vesuvius) is relatively tiny. I just noticed an adminium/mossy stone brick base. Definitely an easy way to survive angry. Will edit more when I finish examining it.
Unless they're hidden well, I don't see anything even remotely resembling timers. (on second thought, I found one in the volcano)
Picture:
Edit: Can I just say the following item (screenshot) is highly likely to be removed. Along with the natural ore veins I found underneath the map. o.e (I counted thirty six exposed iron ore blocks. Many coal ore blocks, too.)
(I realize this is for classic, but it could still do well as survival)