Lava Cave (Japanese: 溶岩洞穴, Yōgan Dōketsu) is a landmark in Xenoblade Chronicles. It is located in the lower region of Valak Mountain, north of the Sealed Tower and the Jakt Geyser. It is a series of tunnels ending in a volcanic cave with waterfalls of lava. It is inhabited by Sierra Vangs, Porcu Hoxes, Ucan Nebulae, Noto Feris, the Moonlight Paimon and the Exposure Wolfol.
There are two Fire Ether Crystal deposits in the cave.