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Pyrrophlagalon is also known as the "City of the Burning Souls". The lost capital was the very black heart of Acheron. The city was the seat of the House of Ixion the Devourer and his two sons, the dread sorcerer Xaltotun and Dhurkhan Blackblade, the Supreme Warlord of Acheron. The location of the city is not known.