Explosion from Yasur volcano (Tanna Island, Vanuatu) in May 2013 (Photo: Dietmar)

Children in the traditional "kastom" village of Jakel (Tanna Island) (Photo: Yashmin Chebli)

Kayaks at the beach (Photo: Tom Pfeiffer)

Indonesian flags in our little bus (Photo: Tobias Schorr)

Monitor (varanus salvator) on Rakata island (Photo: Tobias Schorr)

Rockfalls from Paluweh's active lava dome during the day, generating ash clouds. (Photo: Tom Pfeiffe...

Large ballistic block with its impact structure preserved in the BU-1 pumice fall deposit (ca. 200,0...

Powerful lava fountains shower the rim of the wall and cause a small overflow of lava. (Photo: Tom P...

Markus enjoying a fresh coconut (Photo: Tobias Schorr)

Eruption at Stromboli volcano hitting the moon... (Photo: Tom Pfeiffer)

Chapel at Plaka, built into the white pumice tuff from the 1613 BC Minoan eruption. (Photo: Tom Pfei...

Filigram sulphur needles around a small fumarole vent (Photo: Tom Pfeiffer)

Katze parkt in einem Schornstein in ia (Photo: Tobias Schorr)

The lava fountain is relatively "cold" and much of the erupted magma is fragmented into dark ash. It...

The mighty ash deposits are cut by wave action into deep, vertical gullies and sea caves. (Photo: To...

In the short night rest in the desert, the glow from Erta Ale to the north looks promising... (Photo...

Different seeds on the beach of Rakata island. (Photo: Tobias Schorr)

The Cave of Nicolas tavern at the Akrotiri beach in the evening (Photo: Tom Pfeiffer)

Approaching the active crater of Yasur volcano (Tanna Island, Vanuatu) at night (Photo: Tom Pfeiffer...

Sunset mood in Oia (Photo: Tom Pfeiffer)

Exploding magma bubbles on the surface of the lava lake create Pele's hair (Photo: Tom Pfeiffer)

Tourists at the rim of Erta Ale's lava lake at night (Danakil desert, Ethiopia) (Photo: Tom Pfeiffer...

Our group in position on the crater rim above the campsite in the evening twilight - photographers'f...

Sunrise over Lake Atitlán with Atitlán and Toliman volcanoes in the background (Photo: Tom Pfeiffer)...

A fern tree at Arjuna volcano area (Photo: Tobias Schorr)

Boiling lake at Cipanas (Photo: Tobias Schorr)

A stronger eruption sends many bombs against and over the vertical eastern crater wall. (Photo: Tom ...

Green and yellow ponds beneath a prominent hot spring at Dallol (Photo: Tom Pfeiffer)

Watching the lava lake, the night is illuminated red by its glow. (Photo: Tom Pfeiffer)

Daisies on Santorini (Photo: Tom Pfeiffer)