magma cools down when it comes to the surface from underneath
tramontane is cold_katabatic_wind. gloeocapsa_magma is cyanobacterium. semigroup is magma. sublimation is what_happens_to_dry_ice. earths_core is magma. volcano is solid_ground. magma is rock. magma is ver_hot. paving is spreading_stuff_onto_surface. peat_dried is fuel.