Ben Tennyson:  Whoa , what IS this place ?
Grandpa Max: A blast from the past . It 's an old Plumbers base .
Ben Tennyson: Like the _ one _ at Mount Rushmore ?
Grandpa Max: Not exactly . At the height of the Plumbers , some of these satellite complexes were established around the country in hidden locations , like this one . Once we brought down Vilgax the first time , these annexes were n't needed anymore , so we eventually shut 'em all down .