A geological hotspot is a location of sustained, deep-seated magma uplift that is relatively stationary beneath the Earth's surface. When mobile tectonic plates drift across this fixed magma plume, the interaction generates significant magmatic activity and volcanism. The continuous outpouring of material creates a linear chain of volcanic structures, such as islands or mountain ranges, whose geometry and age progression provide evidence of the direction of plate movement relative to the underlying thermal source. These geological features represent zones where the deep mantle material reaches the surface in a manner distinct from plate boundary interactions.