Its difficult for many to consider the possibility that humanity may have made the climb from stone age to space age more than once.
http://adventuresunlimitedpress.com/proddetail.php?prod=LDOM
The history of life on Mars & other worlds could even go back much further than on earth.
www.unknowncountry.com/dreamland/was-mars-murdered,
www.bibliotecapleyades.net/esp_ancient_atomic.htm#Additional_Information
www.disclose.tv/action/viewvideo/13613/Richard_C__Hoagland__New_Mars_Photos_Pt_1_2,
http://desertshapes.blogspot.ca/2011/11/rch-exploring-mysteries-theories.html,
http://c-shapes.blogspot.ca/2012/04/rch-erb-mars.html
http://mars-earth.com/cydonia_eygpt, http://xfacts.com,
www.bibliotecapleyades.net/marte/esp_marte_70.htm
http://mysteriousuniverse.org/2012/02/exraterrestrial-atomic-war-evidence-of-a-nuclear-blast-on-mars
Whether its a planetary natural disaster or remnants of a world war, various kinds of ruins & artifacts can still be found.
www.dailymail.co.uk/sciencetech/article-2172503/Sonar-scans-UFO-Baltic-sea-actually-secret-Nazi-super-weapon-lost-World-War-II.html,
http://mysteriousuniverse.org/2011/11/hilters-saucers-and-secret-files
Life & Death Over The Earth
http://www.hidden-truth.org/aliens/historic-recorded-spaceship-battles-in-our-skies
