The Upper Underdark is greatly varied. Vast mushroom forests, fungal plains, cavernous halls, deep fathomless lakes and magic infused crystal lined tunnels. In the Underdark is the Under-Desert, a vast swathe of bone-dust dunes lit by a sickly orange light and the Blackened Quagmire, a cloying, oily swamp with twisted, stunted trees and bottomless bogs.
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Filipe LG