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We are going underground here in Europe!

Old mines, subterranean lakes and underground tours: how are you enjoying our new series?

We explore old mines, subterranean lakes and underground city tours: let us know what you think of the reports about underground Europe in our new series. As a token of our thanks we are giving away an iPod shuffle. If you want to get in on the draw, all you have to do is watch the daily reports and give us your feedback.
Watch video 04:50

An Underground Lake in Switzerland

Entries must be in by midnight UTC, 19 May 2016 and as always our decision is final.

Audios and videos on the topic