The dream in which you see the volcano that is erupted means that you are no longer able to hold your emotions, you are going to explode. The stress you are suffering from, the problems you have to solve are too hard to manage. The volcano eruption could also represent the fears the dreamer has and is afraid that things will blow up.
Dream dictionary: Eruption, Volcanic dream meanings
…When we deal with a volcanic eruption: the volcano symbolizes a sudden mutation of real life and the long-repressed passions that can get to explode with all virulence. If we manage to tame these passions they become a source of spiritual life. If it’s a skin rash, then the dream announces fears, concerns and problems painful to bear….