Caption: Scientist holds old and new basalt lava rock from Grimsvotn volcanic eruption, Iceland Left hand, old broken lava from the bedrock, right hand new lava from 2011 eruption which began on May 21, 2011
Size: 4180 x 4180 pixels
Size: 13.9 x 13.9 inches
Size: 35.4 x 35.4 cm
Resolution: 300 dpi