Here's some additional photos to wet the imagination! http://www.forbiddenarcheology.com/
Excerpt: " A metallic sphere from South Africa with three parallel grooves around its equator (photo courtesy of Roelf Marx). The sphere was found in a Precambrian mineral deposit, said to be 2.8 billion years old." Regards Steven Vincent Johnson www.OrionWorks.com www.zazzle.com/orionworks

