Viperwall is a keep built on the eastern shores of Ember Lake in central Varisia. Its many towers and serpent carvings emit a sickening green light and poisonous fumes, so it is to no surprise that the place is greatly avoided by the local population. Rumor has it that the castle was built sometime in the mid-fifth millennium AR by serpentfolk who traveled up from Sekamina through the Mobhad Leigh in order to create a surface outpost for their race. A connection to the Darklands in or near Viperwall is suspected, but lacks confirmation.