UNIT Makeshift Laboratory Garage

A converted industrial garage space within the depth of the secret laboratory, its corrugated metal walls damp with condensation and lined with exposed pipework that hisses intermittently. Overhead fluorescent strips flicker unevenly, casting striped shadows across the concrete floor where oil stains pool beneath the Doctor's sabotaged equipment. The sound of distant machinery blends with the sharp metallic clang of a recently cut chain—evidence cited by the Doctor—as General Finch and Captain Yates enter, their boots echoing on the hard surface. Two heavy-duty metal garage doors at the far end remain sealed, concealing or containing whatever lies beyond this makeshift nerve center.