

Chris Tarrant: Extreme Railway Journeys
Trans-Caucasus Railway
TV-PG
S3 • E4 Nov 20, 2016 45mChris Tarrant travels on the historically Soviet Trans-Caucasus Railway, beginning in the Azerbaijani city of Baku before exploring the Geogian capital Tbilisi's vintage metro system, then a mountain rail bridge designed by Eiffel, and finally a tunnel reputed to be held together with egg yolk.