Here are a few pictures to show you around in POW Escape the next map in the campaign.
Since it took me a while to figure out where to go, i thoughed this could help others with the same problem.
Click on the first link to see the ground level of the camp and surroundings.
Click on the second link to see the tunnels and research facility.
The ground level.
The tunnel and research facility.
The spawnpoints.