How far has anyone ever gone down into a dead volcano crater?

rockyJo

To Jo,

The stories about going down the throat of an old volcano are pretty much science fiction. The last stage of most eruptions involves lava or ash or debris falling back down the conduit so usually there are no long vertical shafts to climb down. The deepest depressions are calderas, which are >1 km across. So, even though you are going a few hundred m into the volcano you don't feel like you're going down a cave because calderas are so wide.

There are caves and lava tubes on the flanks of volcanoes and they can be 10's of km long, but you're not really going down into the volcano, more like following the length of a flow but a few meters underground.

Scott Rowland, University of Hawaii


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