Latitude 19.47 degrees, global points of tetrahedra

When a tetrahedron is inscribed in a sphere (the globe), the points of the tetrahedra fall at 19.47 degrees latitude. At these points on Earth, numerous geologic features occur, the Hawaiian Islands, Mt. Emi Koussi in Chad. From Mysteries of the Mexican Pyramids by Peter Tompkins

For more on this topic, see:

http://www.vortexmaps.com/planets.php