2d elemental depiction flawed

[Brandedblade]

Nether elements below ground... Dirt/Earth > Molten Rock / Lava = Heat = Fire = what were those aetherologists smoking? They're on a planet with active volcanoes T_T! Ice is nowhere down there, being most common at the tops of mountains / when the sun/light is farther away.

This is where the fact the elements are Astrally and Umbrally aligned come into play. You could argue that a flickering flame or wildfires are the astrally charged aspect of Fire, whereas magma could be argued as an umbrally aligned version of fire.