STROKKUR GEYSER, ISLANDA - 20 MAGGIO 2019: I turisti in visita e in attesa dell'eruzione del geyser Strokkur nel Circolo d'Oro d'Islanda - Foto e immagini stock

Geothermally active valley with geysir at Iceland

Snow gun in the summer in the mountain ski resort. A hillside snowmaker works in summer for prevention. Snow machine works in the summer.

Solid rocket booster test in Promontory Utah.

Aerial view of spring dry grass burning field. Fire and smoke in the meadow, nature pollution and danger, shrubs and common waste are burned in Romania

HO CHI MINH - MARCH 7 US Army helicopter used in the Vietnamese war exposed in the War Remnants Museum, Saigon. On March 7, 2013 in Ho Chi Minh, Vietnam

Aerial drone view of morning haze and mist above village houses. Manastireni, Romania

Aerial view of spring dry grass burning field. Fire and smoke in the meadow, nature pollution and danger, shrubs and common waste are burned in Romania

Aerial view of spring dry grass burning field. Fire and smoke in the meadow, nature pollution and danger, shrubs and common waste are burned in Romania

Aerial view of spring dry grass burning field. Fire and smoke in the meadow, nature pollution and danger, shrubs and common waste are burned in Romania

CLUJ-NAPOCA, MAY 18, PUMA helicopter performs a demonstration flight at the Romanian Military Parade on May 18, 2013 in Cluj Napoca, Romania

CLUJ-NAPOCA, MAY 18, PUMA helicopter performs a demonstration flight at the Romanian Military Parade on May 18, 2013 in Cluj Napoca, Romania