As you have not even bothered to specify a volcano or even a region, the safest answer is "on Jupiter's moon Io", whose surface is in a near-constant state of eruption.
As you have not even bothered to specify a volcano or even a region, the safest answer is "on Jupiter's moon Io", whose surface is in a near-constant state of eruption.
As you have not even bothered to specify a volcano or even a region, the safest answer is "on Jupiter's moon Io", whose surface is in a near-constant state of eruption.