In geology, a hotspot or hot spot is a portion of the Earth's surface which experiences volcanism. This may be caused by a rising mantle plume or some other cause. Hotspots may be far from tectonic plate boundaries.
A volcanic hotspot is where magma pushes up from deep in the Earth's crust or mantle and creates a volcano. The earth's plates can move along, creating a new volcano above the hotspot while moving the older volcanoes away. This creates a chain of volcanoes, such as in Hawaii.