Leigh Town Hall is used as a secondary base.

In addition, he decided to set it up as a secondary base.

Often these systems are supplemented with a secondary base, sometimes ten, sometimes twenty.

Counting continues by adding 1, 2, 3, or 4 to combinations of 5, until the secondary base is reached.

He had a small boat moored here as a secondary base.

Bravo, you've got point into the secondary base.

The secondary base was reported to be partially built into one of the ruins, mostly underground.

"We have to find a secure place to camp and establish a secondary base for emergencies."

Alpha was later shown to be alive and well within the secondary base, the Power Chamber.

What other area do you want us to check out xenobiologically as a possible secondary base?