January 24, 2012 - Scoria cone on Nyamuragira Volcano, Democratic Republic of Congo.

January 24, 2012 - Yellow sulphurous deposits resulting from degassing coating scoria cone formed during eruption on Nyamuragira Volcano, Democratic Republic of Congo.

The red scoria quarry at Puna Pau, a cinder cone on the outskirts of Hanga Roa, Rapa Nui National Park, UNESCO World Heritage Site, Easter Island (Isla de Pascua), Chile, South America

Excavating volcanic Scoria rock from the Seydisholar cone for road building material, near Selfoss, Iceland, Polar Regions

Scoria depsoits quarried from the Seydisholar scoria volcanic cone being used for road stone to create a network of tracks for new holiday cabins near Selfoss in Iceland, Polar Regions

Excavating volcanic Scoria rock from the Seydisholar cone for road building material, near Selfoss, Iceland, Polar Regions

Kerio volcanic crater near Selfoss, Iceland, Polar Regions