What’s the difference between this tour and a “traditional” caving expedition?

Well, it’s pretty simple – these are two different things. You are not going into a cave, you are going into a volcano. You should also look at how we get into the vault. The only way into Thrihnukagigur volcano is by descending 120 metres in a cable lift through the top of the crater. In all caving tours, you will walk through an opening on the surface.