More of 2234dw's reconstruction of the first episode of this missing Who serial, made using telesnaps, publicity stills and the existing soundtrack (without narration). 2234dw has graciously allowed me to present it here.
The original can be found on YouTube as "Marco Polo /Ep. 1 The Roof of the World/ Part 2".
The complete soundtrack of this serial is available on CD from BBC Audiobooks.