Pyrovile pod
From Tardis Wiki, the free Doctor Who reference
The Pyrovile Pod was an escape pod composed of rock, made by the Pyroviles.
The surviving Pyroviles from Pyrovillia were ground into dust inside the pod. The pod later became a control centre for Vesuvius.
The Doctor and Donna Noble entered the pod, and triggered the eruption. The pod was tough enough to withstand the power of volcano, and the Doctor and Donna survived the eruption. (DW: The Fires of Pompeii)
