Jakt Geyser (Japanese: ジャクト間欠泉, Jakuto kanketsusen) is a location in Xenoblade Chronicles. It is located in the lower region of Valak Mountain, north of the Sealed Tower. It is most likely created by the magmatic current provided by Lava Cave, which is near the geyser.
The geyser is strong enough to carry the party all the way up to the upper level of the mountain, near Valak Peak. A Nopon Researcher is found there for the first visit. A few ledges down, the entrance to Hollow Bone can be found.