'''Both theories are baseless and absurd because there is no extrusive igneous activity in the area, and there is no evidence of volcanic activity in the area either'''.<ref>http://www.nps.gov/history/history/online_books/deto/sec3.htm</ref> | '''Both theories are baseless and absurd because there is no extrusive igneous activity in the area, and there is no evidence of volcanic activity in the area either'''.<ref>http://www.nps.gov/history/history/online_books/deto/sec3.htm</ref> |