thermal spring
Naturally warmed pool
A thermal spring is a natural flow of water from underground that emerges significantly warmer than the surrounding air temperature.
The heat typically comes from geothermal activity deep in the earth.
Hot springs are popular destinations for bathing: We soaked in the thermal springs after hiking.
Some thermal springs reach boiling temperatures.
Erupting thermal vent
- fumaroleVolcanic gas vent
- volcanismSubterranean magma expulsion process
- hotspotArea of notable activity
- calderaCollapsed volcanic summit basin
magma · steam vent · mud pot · sinter · travertine
Japanese thermal bath
- hammamTurkish public steam bath
- hot poolNaturally heated water body
- soaking poolHeated basin for bathing
- bathhousePublic washing facility
plunge pool · communal bathing · outdoor bath · bathing ritual · immersion · warm soak · natural pool · wild swimming
Yellow combustible element
- silicaSilicon dioxide compound
- calcium carbonateMineral in shells and marble
- bicarbonateAcid-neutralizing salt
- lithiumLightest solid element
magnesium · sodium chloride · iron · mineral content · alkaline · sulfate · trace elements · salinity
Water-based medical treatment
- soakingCompletely saturated with liquid
- mineral bathWater soak with dissolved elements
- healing watersSprings thought to cure
- recuperationGradual return to health
skin conditions · convalescence · restorative · spa therapy · taking the waters
Original U.S. national park
- RotoruaGeothermal city, North Island
- BathSomerset spa city
- Blue LagoonBright turquoise body of water
- BanffAlberta resort town
geyser
Erupting thermal vent
- fumaroleVolcanic gas vent
- volcanismSubterranean magma expulsion process
- hotspotArea of notable activity
caldera · magma · steam vent · mud pot · sinter · travertine
onsen
Japanese thermal bath
- hammamTurkish public steam bath
- hot poolNaturally heated water body
- soaking poolHeated basin for bathing
bathhouse · plunge pool · communal bathing · outdoor bath · bathing ritual · immersion · warm soak · natural pool · wild swimming
sulfur
Yellow combustible element
- silicaSilicon dioxide compound
- calcium carbonateMineral in shells and marble
- bicarbonateAcid-neutralizing salt
lithium · magnesium · sodium chloride · iron · mineral content · alkaline · sulfate · trace elements · salinity · mineral deposits
hydrotherapy
Water-based medical treatment
- soakingCompletely saturated with liquid
- mineral bathWater soak with dissolved elements
- healing watersSprings thought to cure
recuperation · skin conditions · convalescence · restorative · spa therapy · taking the waters
Yellowstone
Original U.S. national park
- RotoruaGeothermal city, North Island
- BathSomerset spa city
- Blue LagoonBright turquoise body of water
Banff · Tuscany · Reykjavik · geotourism
- spashealth spa, day spa, bathhouse, mineral springs, wellness center
- springsmainspring, hairspring, bedspring, coil, coiled wire
- Healing Watershealing water, mineral water, spa water, sulfur water, holy well
- natural poolsswimming hole, cenotes, natural pool, blue holes, rock pool
- underground wateraquifer, underground river, underground lake, underground stream, groundwater
- geothermal energyfumaroles, hot springs, dry steam, steam vents, geysers
spring, thermal, thermostat, thermometer, hot spring, thermals, geothermal, thermally, exothermic