<![CDATA[Rocks and Lava]]>Photo: Lichen on slate
Photo: Lava lake in Ethiopia
Photo: Sandstone canyon walls
Photo: Crystal patterns
Photo: Streams of lava erupting from cone
Photo: Ropy strands of red-hot lava
Photo: Rock swirls in Moab, Utah
Photo: Painted hills
Photo: Red and blue lava on Etna
Photo: Coyote Buttes, Arizona
Photo: Silvery lava flow
Photo: Patterned rock
Photo: Cooled lava
Photo: Eroded rocks on a California beach
Photo: Sandstone at Petra, Jordan
Photo: Red, swirling lava
Photo: Boiling lava
Photo: Lava erupting from volcano
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