The three types of rock October 21, 2011 Filed under: geology | humor Hah. My sister sent this to me. Related Posts Some things are better left unsaid April 26, 2011 NASATweetup Exploring Mount St. Helens blast zone using Google Earth May 23, 2024 volcanoes Lake Taupo and Tongariro Crossing February 1, 2006 field-camp | new-zealand ← Previous Post Extrapolating the screen size of Android mobile phones over time. Next Post → Stop SOPA
