Mongolia is a landlocked country in East and Central Asia. It is bordered by Russia to the north and China to the south, east and west.

The keystone needed to unlock the holograpic map leading to Hollow Earth was originally hidden in an underground cave in the Khovsgol Province, but was later taken to the Batshireet district in Khentii Province, where it was recovered by a British expedition.[1]

Notes and References Edit

  1. Episode 3x09 - "Vigilante"

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