2007DocumentaryHistory
Cities of the Underworld
Strong start, fades by season 4
Don Wildman travels to the farthest and deepest reaches of the globe, using cutting-edge technology to explore mysteries buried deep underground.
Overall
8.0
Votes
957
Episodes
47
Consistency
σ 0.53
Episode heatmap
S1
7.7
8.1
7.8
7.6
8.1
7.6
7.5
8.1
7.0
8.3
8.1
7.6
7.8
S2
7.3
8.4
8.7
7.3
7.9
8.0
7.3
7.8
7.5
7.6
7.2
8.6
7.3
S3
7.5
8.1
7.7
6.8
8.1
7.6
7.1
7.5
7.9
7.5
8.6
7.5
7.6
S4
6.8
6.4
6.6
6.5
7.9
6.9
7.7
7.9
LowHigh
Season averages
S1S2S3S4
Best
8.7
S2E3
Worst
6.4
S4E2
Trend
falling
slope -0.014
Seasons
4
with ratings
