What part of do you come from? <a href=" http://esuf.org/get-involved/ ">loan that get easyily approved</a> The petroglyphs found on limestone boulders near Pyramid Lake in northern Nevada's high desert are similar in design to etchings found at a lake in Oregon that are believed to be at least 7,600 years old. Unlike later drawings that sometimes depict a spear or antelope, the carvings are abstract with tightly clustered geometric designs -- some are diamond patterns, others have short parallel lines on top of a longer line.