The Vault

The Vault was an underground storeroom beneath the mountain called Hope in the remote valley of the Twilight Mountains known as the Lair. It was created by tunneling into and laboriously draining a natural aquifer within the mountain.

Storing Unpaid Imperial Taxes
In the early 6th century the leader Heichi Jomei sealed the Lair off from the outside world, to maintain the Boar heritage from the dangers that had destroyed their clan. An underground passage was built beneath the Lair of the Boar, leading to the Vault, the place where the clan's unpaid taxes were stored. This tunnel was always guarded, both by bushi and by traps.