Some words from the builder Jalaric1
Castle Dravulkan is located on a remote rock it lies far from civilization, since it’s inhabited by the vampires. Castle Dravulkan is the safe heaven for vampires, they can trade humans and blood, and they can take a rest in the dark dungeons below the mausoleum. The rock is consistent of two parts, on the first rock lies the great mausoleum and resting place of most vampires. On the other rock is a big castle owned by the greatest vampire lord ever.
It is really important that you use the texture pack, the whole map can get really ugly without it!