Underground Worlds

Season 1 Episode 2: Sweden

Explores how Sweden has gone to extraordinary lengths to protect itself - by excavating 65,000 nuclear bunkers. Plus, Somerset's Cheddar Gorge and an underground first in Romania.

Genre:

Documentary

Seasons:

2

Episodes:

20

Cast:

Chris Jarman

Quality:

HD

Duration:

45 min

First Air:

2019

Rating:

8.0