However, James has left some explosives in the maintenance tunnel and blows out the wall.

The entrance to the next room was about a meter above the floor and looked more like a maintenance tunnel.

It could have been just another maintenance tunnel for the service crews, but Brett didn't think so.

He also found a network of maintenance tunnels leading away from the base.

Now, the central maintenance tunnel is well under way from each shore.

The vision carried a briefcase, and he was not only alone, he'd gone through a door into a maintenance tunnel!

Taran'atar led them into what appeared to be a maintenance tunnel.

"I don't happen to keep a 3-D color map of the ship's maintenance tunnels in my memory."

There has been some discussion of the maintenance tunnels below the building which do not appear on any plans.

They stepped into a maintenance tunnel, gray with a low ceiling.