TDP 678: 4th Doctor Adventures 6.6 - SUBTERRANEA from @BigFinish

@tindogpodcast reviews The TARDIS is going underground. When the Doctor and Romana find themselves buried beneath the surface of an alien world, they're soon swallowed up by a giant burrowing machine. This is where the inhabitants of this planet live - in huge, constantly moving, Drill-towns, chewing up the fuel and resources of the planet in order to survive. But something else lurks in the earth. Something that feeds on the Drill-towns. Something that is relentless and will not stop. The Silex are hunting. Written By: Jonathan Morris Directed By: Nicholas Briggs Cast Tom Baker (The Doctor), Lalla Ward (Romana), Matthew Cottle(Mr Maxwell Wilberforce Bell), Abigail McKern (Mrs Lucretia Bell), Robbie Stevens (Mr Jelicho Wigg/ Mr Wilfer Wagstaff), Jane Slavin(Miss Arabella Wagstaff/ Mrs Betsy Wagstaff), John Banks (Silex/ Mr Stoker). Other parts played by members of the cast. Producer David Richardson Script Editor John Dorney Executive Producers Jason Haigh-Ellery and Nicholas Briggs