DE_ALPS by Dimension Studios.
http://www.dimensionstudios.org/

Special Thank to the Orion team.
http://www.orion-project.net/

INSTALLATION:
All the necessary level components are in one single file - de_alps.bsp. 
Just extract it into your counter-strike source\cstrike\maps directory,
load it in counter-strike source, and enjoy. You can also play the map
with bots. The navigation mesh for bots is included in the bsp file as well.

REQUIREMENTS:
You must have a copy of HL2 and the latest version of Counter-Strike Source
to play this level. If you do not have this software visit
http://steampowered.com/ to purchase and download it.
To enjoy the map fully we recommend using a system with at least 1GB of RAM,
and a DirectX 9.0 or higher video card with at least 256MB of video memory.

CONTACT:
If you would like to contact us please visit
http://www.dimensionstudios.org/contact.php