Steam cloaks swimmers at hot-springs-fed Laugardalur pool--note snow on ground;December/Reykjavk Iceland

Swimmers walk across icy deck of Laugardalur hot-springs pool cloaked in steam;December/Reykvk Iceland

Sigurjon Hauksson pulls hverabraud bread from geothermal steam oven outside bakery; Hveragerdi Iceland

Schoolchildren walk home amid steam in geothermally-active town of Hveragerdi on an autumn day. Iceland

Plumes of geothermal steam fill winter sky above greenhouse farm complex;Rekjahverfi near Husavik Iceland

Woman waters plants in geothermal greenhouse nestled in snow @ state ag school in Hveragerdi. Iceland

Woman waters plants under sun lamps in geothermal greenhouse at @ state ag school in Hveragerdi Iceland

Steam rises off Eldfell, a volcano that formed in 1973 and buried town of Vestmannaeyjar on Heimaey; Westman Islands, Iceland.

Steam blows off ridge of Eldfell, volcano that formed & erupted in '73 on Heimaey; Westmann Is. Iceland

Below Eldfell volcano, men install pipes in lava for home-heating system on Heimaey Isle; Westmann Iceland

Worker walks along pipe half-buried in lava for home-heating system on Heimaey Isle; Westmann Iceland

Man welds heat exchangers to bury in lava w/ water running thru them for home heating; Westmann Iceland

Man welds heat exchangers to bury in lava w/ water running thru them for home heating; Westmann Iceland

Man welds piping that runs from lava to town of Westmann Islands, behind, for home heating. Iceland

Pressure-separator towers are cloaked in steam at the Svartsengi geothrmal heating & power plant* Iceland

Briny steam runoff leaves terraced mineral deposits @ Svartsengi geothermal heating & power plant Iceland

Steam wafts across pool of briny runoff at Svartsengi geothermal plant in late afternoon. Iceland

Substation of Reykjavik's geothermal home-heating system spouts steam on a winter afternoon. Iceland

Turbine house and cooling towers of geothermal electric plant at Krafla vent steam in snowy land. Iceland

Billows of steam fill sky beside turbine house in snowy land at Krafla geothermal electric plant Iceland

Turbine house and cooling towers of geothermal electric plant at Krafla vent steam on snowy nite. Iceland

Snow-mantled, volcanic hills loom over steam pipe lines at Krafla geothermal electric plant Iceland

Steam from borehole rises behind rhyolitic hill above geothermal well field at Krafla. * Iceland

Steam pours from borehole in steam field at Krafla geothermal electric power plant. Iceland

Two large pipes fill snowy landscape, leading from boreholes to Krafla electric power plant. Iceland

Like silver snake on black sands, pipe carries steam from a well to Krafla geothermal power plant Iceland

Kisilidjan diatomite plant is cloaked in geothermal steam, the factory's lifeblood; Myvatn Iceland

Steam spews out substation in geothermal well field that feeds Kisilidjan diatomite plant. Iceland

Steam spews out substation in geothermal well field that feeds Kisilidjan diatomite plant, back Iceland

Pipe emerges from cloud of steam in geothermal well field that feeds diatomite plant at Myvatn. Iceland

Sheep stand in pasture backlit by sun as steam billows from geothermal well field at Myvatn. Iceland

Hotel mgr. poses by sign informing guests of emergency plans for volcanic eruption;Reykjahlid Iceland

Civil defense chief of Reykjahlid displays map of eruption & quake zone threatening his town. Iceland

Aerial view of Krafla eruption (10/80) on Gjastykki plains of northern Iceland.

Aerial view of Krafla eruption (10/80) on Gjastykki plains of northern Iceland.

Orange smoke billows from lava fountain at dusk amid simmering lava sea; Krafla eruption, Iceland

Fountains of lava spew from fissure as moon rises during October 1980 Krafla eruption. Iceland

Scientists glow in orange light of Krafla lava eruption as burning methane gas from underground magma river jets to surface and burns beneath rising moon; Iceland.

Lava pot boils violently on the volcanic plains of Gjastykki in October 1980 Krafla eruption. Iceland

Lava boils violently up through cooling black crust during the October 1980 Krafla eruption. Iceland

Embers from lava fountains etch graceful arcs against dawn sky of October 1980 Krafla eruption. Iceland

Boiling magma bursts skyward and spraying hellfire in cauldron of blackened lava; Krafla, Iceland.

Fountains of lava spew in distance as nearer fissure simmers w/ row of lava fire; Krafla, Oct 80 Iceland

Huge lava fountains spew from fissure as molten stream cascades down black slope; Krafla, Oct 80 Iceland

Huge lava fountains spew from black fissure on Gjastykki plains during Krafla eruption in northern Iceland.

Huge lava fountains spew from black fissure on Gjastykki plains during Krafla eruption in northern Iceland.

Scientist toils up slope toward huge fountains of lava during Krafla eruption of October 1980. Iceland

Steam vents from a crater amid fresh pahoehoe lava from Krafla eruption on Gjastykki plains. Iceland

Yellow sulfur deposit on steaming crater is only color in vast blackness of a Krafla lava flow. Iceland

Scientists on snowy ridge use laser eqpmt to measure land shift following Oct 80 Krafla eruption Iceland

Man huddles in snowy rift on Mid-Atlantic Ridge while entering data on crustal shifting in book Iceland

On steamy Leirhnjukur, man measures growing gap between icy pipes that straddle Mid-Atlantic Ridge Iceland

As Leirhnjukur steams, man measures growing gap between two pipes that straddle Mid-Atlantic Ridge Iceland

On steamy Leirhnjukur, man takes gas samples to monitor hydrogen level & predict Krafla eruptions Iceland

Kot farmhouse is dwarfed by Mount Hekla, still smoking the day after August 1980 eruption. * Iceland

Two farmers stand on ridge surveying cinder-buried pastures one day after 1980 Hekla eruption. Iceland

Farmer surveys black desolation of cinder-buried pasture day after 1980 Hekla eruption. Iceland

Endless expanse of black volcanic cinder carpets former pasture day after 1980 Hekla eruption. Iceland

Pasture's tallest grasses poke thru deadly blanket of cinder the day after 1980 Hekla eruption. Iceland

Thick blanket of cinder cloaks hut & former pastures in black, day after 1980 Hekla eruption. Iceland

Bathers wade near footbridge amid lava rock at the Blue Lagoon, a geothermal spa renowned for healing powers; Grindavik, Iceland

Bathers soak in healing waters of Blue Lagoon as Svartsengi geothermal heating and power plant spews steam; Grindavik, Iceland.

Bathers soak in healing waters of Blue Lagoon as Svartsengi geothermal heating and power plant spews steam; Grindavik, Iceland.

Women bathers lounge in shallows of the Blue Lagoon, a geothermal spa renowned for its healing powers; Grindavik, Iceland

Lifeguard dressed for cold weather watches bathers soak in Blue Lagoon, a geothermal spa famed for healing waters; Grindavik, Iceland

Young couple cuddles while soaking in the Blue Lagoon, a geothermal spa renowned for its healing powers; Grindavik, Iceland.

The Pearl restaurant center is surrounded by geothermal hot water storage tanks that heat nation's capital; Reykjavik, Iceland.

Young woman hold her baby daughter as they bathe at geothermal public swimming pool in Laugardalur; Reykjavik, Iceland.