obsidian, volcanic glass, landmannalaugar region, fjallabak, iceland, europe - obsidian stock-fotos und bilder
basalt columns created when lava hardens in a famous tourist destination located on the volcanic beach of vik in southern iceland. - obsidian stock-fotos und bilder
obsidian, volcanic glass, newberry national volcanic monument, oregon, usa - obsidian stock-fotos und bilder