👉 Sunbursts are a type of volcanic eruption that occurs when magma from an active volcano rises up to the surface and cools. The lava is then collected in a small hole or fissure, which can be hundreds of meters deep. This process can last for several days, depending on the intensity of the eruption. The term "sunbursts" refers to the phenomenon of volcanic eruptions that occur when magma rises up from an active volcano and cools, forming lava lakes or volcanic cones.