Cellar of Fendelman's Lab

The subterranean cellar beneath Fendelman's converted priory serves as the final battleground against the Fendahl's transformation. Stone walls weave through the cramped, dimly lit space, housing rusted equipment and scattered salt pouches delivered by Martha. Its low ceiling forces confrontation between the Doctor's team and the spreading alien entity, with the lead-lined box Colby carries becoming the linchpin for containment. The air grows thick with tension as the skull's energy pulses against their preparations.