WTF! EARTHQUAKE HAVING EXACT SAME DEPTH? LOUD GROANING NOISE/HUM IS ALIEN SPACECRAFT? CREDITS TO "H4LFB4CKS" September 3, 2011 =================================== http://aslwww.cr.usgs.gov/Seismic_Data/heli2.shtml http://aslwww.cr.usgs.gov/Seismic_Data/heli2_us.shtml