About this programme
A strange cave freezes in summer and melts in winter, and a huge sand dune swallows a small child in an instant. Rob and Stefan explore these mysteries.
Programme listing
Secrets Underground
Mystery Of The Ice Cave
Other airings
Fri 24 Jul
09:00Secrets Underground
Tesla's Final SecretsDisc.HistoryFri 24 Jul
10:00Secrets Underground
Doomsday Volcano MysteryDisc.HistoryFri 24 Jul
10:00Secrets Underground
Tesla's Final SecretsDisc.History+1Fri 24 Jul
11:00Secrets Underground
Doomsday Volcano MysteryDisc.History+1Fri 24 Jul
13:00Secrets Underground
California's Hidden DoomsdayDisc.ScienceFri 24 Jul
14:00Secrets Underground
California's Hidden DoomsdayDisc.Sci+1Fri 24 Jul
14:00Secrets UndergroundDisc.ScienceFri 24 Jul
15:00Secrets UndergroundDisc.Sci+1Mon 27 Jul
09:00Secrets Underground
Atlantis In AmericaDisc.HistoryMon 27 Jul
10:00Secrets Underground
Mystery Of The Ice CaveDisc.HistoryMon 27 Jul
10:00Secrets Underground
Atlantis In AmericaDisc.History+1Mon 27 Jul
13:00Secrets Underground
Great Lakes Bermuda TriangleDisc.Science
09:00Secrets Underground
Tesla's Final SecretsDisc.HistoryFri 24 Jul
10:00Secrets Underground
Doomsday Volcano MysteryDisc.HistoryFri 24 Jul
10:00Secrets Underground
Tesla's Final SecretsDisc.History+1Fri 24 Jul
11:00Secrets Underground
Doomsday Volcano MysteryDisc.History+1Fri 24 Jul
13:00Secrets Underground
California's Hidden DoomsdayDisc.ScienceFri 24 Jul
14:00Secrets Underground
California's Hidden DoomsdayDisc.Sci+1Fri 24 Jul
14:00Secrets UndergroundDisc.ScienceFri 24 Jul
15:00Secrets UndergroundDisc.Sci+1Mon 27 Jul
09:00Secrets Underground
Atlantis In AmericaDisc.HistoryMon 27 Jul
10:00Secrets Underground
Mystery Of The Ice CaveDisc.HistoryMon 27 Jul
10:00Secrets Underground
Atlantis In AmericaDisc.History+1Mon 27 Jul
13:00Secrets Underground
Great Lakes Bermuda TriangleDisc.Science