Lava

Stromboli volcanic eruption

Molten pahoehoe toe

Pahoeoe fountain

Pahoehoe, Hawaiian smooth lava

Lava fountain within Villarica's crater

Lava sets tree on fire, Hawaii

Lava tongue, Hawaii

Iceland, 2010

Iceland, 2010

Active Pāhoehoe and ʻAʻā flows, Hawaii

Open Pāhoehoe flow, Hawaii

Toe of Pāhoehoe flow, Hawaii

Pāhoehoe flows into Pacific, Hawaii

Lava lake, Mount Nyiragongo

Pu'u 'O'o, Hawaii

Mount Etna, 2013

Thirty-year-old pahoehoe flow, Hawaii

Thurston Lava Tube, Hawaii

Lava tube, Canary Islands

Indian Tunnel lava tube, Craters of the Moon National Monument

Columnar basalt, Huasca de Ocampo, Mexico

Columnar basalt, Giant's Causeway, Ireland

Columnar basalt, Israel

Old A'a flow in Hawaii

Old pahoehoe flow in Lava Beds National Monument (LBNM)

Lavacicles in Golden Dome Cave (LBNM)

Dripstone in cave (LBNM)

Lava bomb from Hekla, Iceland

A'a volcanic rock, Questacon, Canberra

Pahoehoe volcanic rock, Questacon, Canberra

Lava squeeze-up in Capulin Volcano National Monument, New Mexico, USA

House buried in lava from Mount Etna

A pietracannone or petrified tree near Rifugio de Monte Baracca, Sicily

Ropy pāhoehoe lava in La Palma, Canary Islands

Lava spatter at Krafla

Pillow lava at Oamaru, New Zealand