Hot spots are regions deep within the Earths mantle from which heat rises by convection. They are volcanic locales thought to be fed by underlying mantle that is anomalously hot compared with the surrounding mantle). Hot spots can be found around the globe, on land and in the ocean. When a plate moves over a hotspot, a line of volcanoes develops, much like a line of melted wax forms as a sheet of waxed paper is moved slowly over a burning candle. Most hotspot volcanoes are basaltic and less explosive than subduction zone volcanoes). Hot spots can cause widespread volcanic activity, and several National Park Service sites lie above hotspots, or within volcanic regions formed as plates moved over a hotspot. Examples of hotspots include the Hawaii, Iceland, and Yellowstone hotspots).