Richard Hammond's Big — Season 1, Episode 5: World's Longest Railway Tunnel
Documentary • 45 min • 1 season, 9 episodes • ★ 7.5/10
Episode synopsis
Richard ventures 2km beneath the Alps into the world's longest underground railway connection, the Brenner Base Tunnel, riding some giant machines!
About Richard Hammond's Big
Richard Hammond embarks on a global adventure to explore the world’s biggest structures and machines and discover how engineers build, maintain and use them.