Watch: Close-up footage of lava fountaining at Mayon Volcano

The first trumpet judgment involves 'hail mixed with fire and blood' falling from heaven. While not identical to volcanic lava fountaining, the imagery of fire falling from above and burning vegetation shares thematic elements with volcanic eruptions that can rain down fiery materials.

Volcanic activity could be categorized under natural upheaval that includes earthquakes and geological disturbances. The prophecy mentions 'earthquakes in various places' as signs of the times, and volcanic eruptions often correlate with seismic activity and geological instability.