Hveragerði is a town surrounded with steam. Tracing the mantle currents, the town is found to have a very central location.
Greenhouses of Hveragerði with steam from hotsprings in the background.
The main mantle division line is considered to be that of the deep mantle currents responsible for opening the Atlantic Ocean. A further analysis shows how the convection rolls above form a network providing circulation of magma material around the globe. The division lines of convection rolls of all the layers happen to cross under Hveragerði, including the main division line of the lower mantle. This makes the location so special.
What is found on the surface at Hveragerði…
What is found to be below…