Nice, but since this is a test, and you didnt texture it too much, there aint much to coment unless you post the sampling level - time - bounces and such info.
Anyway it looks promising, some nice midle-eastern textrures would be great!! (total textures CD vol 12)
sample level 15
render time 1 hour
i didn't use any anti noise filter , it is pure maxwell output
used sun light and sky
---------------------------------------------------------------------------
i reached the 17 samles in maxwell Alpha in 6 hour or 5 1/2 hour
this beta faster then alpha