Black Mountains - Prison Island

Black Mountains - Prison Island is Disc 9, Track 9 on the Xenoblade Chronicles 3 Original Soundtrack and Disc 20, Track 9 on the Xenoblade Chronicles Original Soundtrack Trinity Box. Black Mountains - Valak Mountain is a version of this track with less prominent drums and bass guitar.

It is the area theme for during the day. The track is smoothly transitioned into from the equivalent part of Black Mountains - Valak Mountain when using the Ether Slide to Prison Island, and vice versa when taking the slide back.