With 500+ downloads of Tunnel v3.2, I've decided to make a version 3.6 which has some updates to the geometry and weapon layout. I have also renamed the map to SLAC Tunnel to commemorate the Stanford Linear Accelerator Center located in Menlo Park, CA. SLAC is 2 mile long underground particle accelerator that somewhat resembles my map. The foundry version of SLAC Tunnel is an objective map which has two symmetrical bases separated by two tunnels with side passageways leading to a middle structure on top. The map is designed to be played with Multi-Flag and with 4-8 players but it is also set up for assault, king of the hill, oddball, and territories.

The updates from Tunnel v3.2 include:

1.) Fixed blue base staircase to middle structure (more flat and sealed)
2.) Wider opening to the red base.
3.) Roof aligned in middle area.
4.) Outside geometry smoothed out.
5.) Added pillars underneath middle where sniper spawns (150 sec) and two plasma grenades (30 sec) spawn.
6.) Removed shotguns, replaced with maulers (90 sec) in the window wells in each base.
7.) One bubble shield in the middle (90 sec) instead of one in each base.
8.) Compatible with territories; includes 5 territories: one in each base by the main entrance, one by the foot of the stairs leading up to middle structure on each side, and one in the upper middle area.

The game variant designed specifically for this map:
Tunnel Flag

<< Update 2/3/09 >>
I just finished SLAC Conquest, which blocks off the lower tunnel so you can't flank the opposing team and the weapons are changed according to the rules of Conquest, there are also some cosmetic changes to the red base. It is designed to be played with Conquest v3. You can download the map here:
SLAC Conquest

Download Here