Concept for Isle of Nex

Some Idea for Isle of Nex I came up with when I was making Southern
Temple wallset. I've updated file with Drakkan's name for main city
(Ilora). I based by concept on Juho's comment on my guess about Isle of
Nex society:
http://www.grimrock.net/forum/viewtopic.php?f=14&t=4423&p=45814&hilit=isle+of+nex#p45814