Bionis' Thumb is a landmark in Xenoblade Chronicles. It is the first landmark in Sword Valley, and consists of a tunnel joining Valak Mountain to the Supply Convoy. After traversing a small part of it, the party gets their first sight of the sword and Galahad Fortress, and realize that ether from Bionis is being drawn into the sword, as fuel for Mechonis. There are no enemies here.


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