“Ghost Light”, Chapter 3: “Uncharted Territory”

On these albums

Doctor Who: The Earth Adventures CollectionVictor Pemberton read by David Troughton, Terrance Dicks read by Tom Baker, David Fisher read by Susan Engel & John Leeson, Eric Pringle read by Nerys Hughes & Marc Platt read by Ian Hogg · 2019

Source: MusicBrainz recording c0d727f0-7e50-417f-8d2b-4b349336df12 (CC0).