warning sign of hot earth.caution of high temperature on golden circle tour near big geyser geothermal area.steaming boiling water

attraction beautiful boiling burn calm caution cloud cloudscape cloudy danger day desolation destination earth europe european geyser haukadalur health heat hot iceland icelandic idyllic landform mountain natural nature out outdoors protection risk rugged safe safety sign spouting steam sultry temperature tourism tourist travel volcanic warning waterways weather