Kingdom of Uraya/Night

Kingdom of Uraya/Night is Disc 2, Track 13 on the Xenoblade2 Original Soundtrack and Disc 7, Track 13 on the Xenoblade Chronicles Original Soundtrack Trinity Box.

It plays in the Stomach and Olethro Ruins areas of Uraya, as well as parts of the where  does not play, during the night. During Crystal Squall weather, it also plays during the day in all these locations. Whether or not this is intended is unknown.