May 21, 2008 - Lava bomb trajectories visible during nighttime vulcanian eruption of Anak Krakatau volcano, Sunda Strait, Java, Indonesia.

May 20, 2008 - Lava bomb trajectories visible during nighttime vulcanian eruption of Anak Krakatau volcano, Sunda Strait, Java, Indonesia.

May 20, 2008 - Lava bomb trajectories visible during nighttime vulcanian eruption of Anak Krakatau volcano, Sunda Strait, Java, Indonesia.

Stress cracks in the skin of a large fallen lava bomb near Mount Lokon, an active stratovolcano, near Tomohon city, Gunung Lokon, Tomohon, North Sulawesi, Indonesia, Southeast Asia, Asia

Canary Island amphora (Rumex lunaria) and lava bomb in front of the Caldera Colorada, Parque Natural de Los Volcanes, near Masdache, Lanzarote, Canary Islands, Spain, Europe

Lava bomb in front of Caldera Colorada, Parque Natural de Los Volcanes, near Masdache, Lanzarote, Canary Islands, Spain, Europe

Volcanic bomb in lava field, in front of a red volcano, Montana Colorada, Lanzarote, Canary Islands, Spain