Reading UFO and books of the Graham Hancock type over the years, I`ve often read of artifacts that defy explaination because they seem to be man made but are found in a geological strata that defies the man made arguement.

the article below seems to fit very nicely in to the ET category, whats anyone think, got any more examples of ? "Grooved Sphere from South Africa, 2.8 Billion Years Old: If extra-terrestrial beings do visit the Earth, they must have done so in the past also, and the question is raised: are there any indication of possible ancient visits by extra-terrestrial beings on Earth? The answer is, surpisingly: yes, there are" http://www.chez.com/lesovnis/htm/transvaalspheres.htm Taken from Klerksdorp museum, home of the grooved spheres Put the link in below to the museum site but the writing here raises one point which may or may not detract from the alien influence. "When only partly embedded so that they can be seen on the surface, they are not all spheres, but some are also oblong in form." The fact some are oblong seems to indicate that a more natural creation but given the complexity of machines and technology in general who could say? http://klerksdorp.org/navigation/30.htm One thing from this is that whatever they are they are not a hoax, whether they are natural or Et in origin they are genuine artifacts