Hot answers tagged volcanoes
Yes, it's possible, people even camp there specially for the starlight. These images are by the way the 4th hit on Google search for "aogashima". This tiny map which somehow disappeared from the official website of Aogashima also indicates where the path is to reach the center.
You should be able to observe the blue flame each night, as it's the temperature of the flame and the substances burning. However, this is nature, nothing is guaranteed. Saying that, it is reliable enough that there are tours built around it. For example, the Paket Kawah Igen Blue Fire Tour. It's in Indonesia, but running it through Google Translate, ...
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