And that is a miracle because for years this was a secret base where nobody could come.

"At least we can find the location of his secret base."

Yet he'd never actually met anyone who was stationed at the secret base except for the ground crew.

He could see the secret base less than a mile ahead of him.

"They almost always give away a secret base by going overboard on security."

You are taken to a secret underwater base from which the object of the game is to escape.

The player must bring them back to a secret base.

What's the fun of having a secret base if you can't show it off?

For Earth, they are planning a series of disasters, and use the chemical plant as a secret base.

The Rangers operated from a secret base on a mountain top.