Geysers are wells of hot water that erupt on the Islands in the Devil's Roar. Geysers only appear on soft/diggable terrain, thus making rocky areas safe spots. When the Geysers erupt, they will launch any Pirates standing on the pockets high in the air. Any Skeletons standing above erupting Geysers will also be killed, with Skeleton captains dying from two to three Geyser hits. Therefore Geysers can be used as a tool to easily do Order of Souls Voyages in the Roar. The Chest of Rage will get agitated by Geysers.
Some Geysers will erupt repeatedly and perpetually, however most Geysers spawn on random spots of land, erupt 2-3 times, than dissipate. When Pirates are launched by the Geyser, they will typically take fall damage, but crafty Pirates can maneuver themselves on slopes, higher ground, or in water, avoiding fall damage. Geysers will detonate any Gunpowder Barrels they hit and also deal damage to Rowboats. While Geysers do not indicate a Volcanic Eruption, however there are periods when the Geysers are more and less active.
Geysers can appear outside of The Devil's Roar during the Ashen Lord World Event signified by a fiery swirling Tornado. During their final phase, Ashen Lords can summon a volcanic eruption on the island itself, during which, geysers are also present. Once the Lord is defeated, Geysers will appear around them, helping Treasure emerge.