First think I gotta say is this:
Invalid terrorist spawnpoint at (-42.6,3.0,3.0)
Invalid terrorist spawnpoint at (-118.6,3.1,3.1)
Was the first thing I saw when I ran the map, and you should check that out for it means two of the T spawn points will cause the player to either die or get stuck, for they will spawn in a solid object or in the void.
Now, the BIGGEST problem I have with this map is the gameplay. The CT's spawn underground, while the T's spawn above ground. Not only is this unfair for the CT's (they have to guard 5-odd entrances with a downhill dis-advantage) but it also makes the beautiful above-ground area useless. No CT would have time to get above ground before the T's got underground, so they will be stuck underground for the whole map. The main reason why this bothers me is that the underground is ugly. Add some static props or some different textures, for I grew sick of the underground in less than 2 minutes. Also, a radar would be EXTREMELY helpful and I suggest you to use this tutorial.
I find it a shame that you put so much time into the above area's aesthetics only to see it go to waste. Try moving the A bomb site to the chamber with the throne directly above the B bombsite. Then move the CT spawns to above ground near the A bombsite and the gameplay would be MUCH improved.
Finally, I noticed that in the .rar file you had the bsp, txt, and 4 screenshots. First of, get rid of the screenshots in the .rar, for no one wants to have those in their map folder. Secondly, use PAKRAT (here's a tut) to embed the .txt credits into your bsp. This way, no one will be able to easily to steal credit. Also:
PLEASE MOVE THIS TO CORRECT SECTION (CS:S > MAPS > de (defusal) maps)
Its a good start, but before it becomes a great map you need to fix some things. I'll be looking for a v2.
I have a girlfriend, lolwut?