english: And I went to see one of these experiments, and this is actually -- you can barely see it, and the reason for that is it's entirely dark in there -- this is a cavern that was left behind by the miners who left this mine in 1960.
non_english: Otišao sam da vidim jedan takav eksperiment, i ovo je zapravo -- jedva možete da vidite, zato što je tamo toliko mračno. Ovo je pećina koju su napustili rudari kada su napustili rudnik 1960.