Underground Ruins are ruins located in the country of Midonite that only appears in the Hunter × Hunter: Altar of Dragon Vein game.[1]


The Underground Ruins are ruins in Midonite that was recently discovered by the Midonite Government Environment Protection Bureau.[1]


Altar of Dragon Vein

Chibi Gon and Killua
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  1. 1.0 1.1 1.2 Hunter × Hunter: Altar of Dragon Vein
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