Estea: The Shadows Lengthen
Many consider the Underdark to be a myth to frighten children. Surely no great civilizations could live in the cramped darkness of a cave.
But there is a whole other world below the surface. Far below the mines and dungeons of humanity is a whole other world of massive caverns – kept warm by their proximity to the earth’s core – lit by strange crystals and glowing fungi – fed by underwater streams and lakes.