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Fractures in the Mazama dacite lava flow at Mount Rainier, USA (C. Conway)
From Fractures in the Mazama dacite lava flow at Mount Rainier, USA (C. Conway)
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Lava flow moving over snow at Tolbachik volcano, Russia, 2013 (B. Edwards)
From Lava flow moving over snow at Tolbachik volcano, Russia, 2013 (B. Edwards)
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Fumarole on Mount Nasu, Japan (C. Conway)
From Fumarole on Mount Nasu, Japan (C. Conway)
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Fractures in a dacite lava flow at Ruapehu volcano, New Zealand (C. Conway)
From Fractures in a dacite lava flow at Ruapehu volcano, New Zealand (C. Conway)
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Nisqually Glacier and the southern flank of Mount Rainier, USA (C. Conway)
From Nisqually Glacier and the southern flank of Mount Rainier, USA (C. Conway)
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Column Forming Joints In An Andesite Lava Flow At Ruapehu Volcano, New Zealand (c Conway)
From Column Forming Joints In An Andesite Lava Flow At Ruapehu Volcano, New Zealand (c Conway)
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The lofty peak of Volcán Villarrica, Chile (B. Edwards)
From The lofty peak of Volcán Villarrica, Chile (B. Edwards)
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Lava flow moving over snow at Tolbachik volcano, Russia, 2013 (B. Edwards)
From Lava flow moving over snow at Tolbachik volcano, Russia, 2013 (B. Edwards)
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