Were ancient civilizations visited by aliens?

We seldom forget that there were dark ages that affected different civilizations and caused a sort of regression in terms of literature and sciences. Best example is the dark age in Europe which would seem incomparable to Roman and Greek antiquity. There's no reason to think that technological/scientific development was linear throughout the history of mankind. Consider the case of the Antikythera clock which was thought to have been buit around 150 BCE. The technology that would enable us to built something of such intricacy would only resurface during the Renaissance period almost 16 centuries later!

Can you give me examples of such stone deities. I'm quite curious about what you're saying.

Originally posted by PakistaniShield   A couple of many examples:  http://skepticalcubefarm.files.wordpress.com/2011/03/ancient-aliens-the-visitors.jpg http://www.crystalinks.com/ufokiev434.jpg http://upload.wikimedia.org/wikipedia/commons/2/2d/Ancientastronauts.jpg

Strange, I'll give you that! They look almost like astronauts, especially the last relief which must be quite ancient if it's a cave drawing.

Originally posted by red clay We are missing large chunks of our history.  Who's to say that the ancients didn't have these technologies, developed by themselves.  Why is it easier to believe that "spacemen" gave us these tools, rather than the ancients developing them on their own? About 5 years ago a group of college students, using only what the Nazca people would have had access to, built and flew a hot air balloon to a height of 200 ft, plenty high enough to view the lines.  As for the stones used in the pyramids, a little guy by the name of Ed Leedskalnin figured out how they did it, back in the 30's.  Google- Coral Castle.

A balloon is plausible. If you throw a piece of paper on the fire it rises due to the heat. Through trial and error the Nazca could have constructed a cloth bag and heated it over the fire until it began to rise

Amen my brother....AMEN.

Oh come on Nick, you must acknowledge that something is odd. Not saying this PROVES that aliens exist (I doubt they do) but I don't think your over-simplification fits.

They look quite different imo. The picture shows a person who has some kind of halo or round spherical object on top of his/her head. Then there some kind of pins or feathers coming out of it. That's not how I would have drawn an Indian head-dress if I was the one living in that cave, that's for sure... In the end, I think it's all subjective really but you are right, your theory is much more plausible that little green men (as I mentioned earlier, I don't believe in their existence). I'm simply saying that these pictures look strange and I can't really recognise what they are supposed to represent.

What do the documentaries say they are? I still think they are representations of dancers or possibly shamans

Originally posted by Nick1986 What do the documentaries say they are? I still think they are representations of dancers or possibly shamans

You need to watch them. However after season 2 they seize to make sense.

Originally posted by Don Quixote I had never written here, so I have to state that my personal opinion that I don;t push on anyone is that we don;t need aliens to explain most of the human creations, ideas, etc. There are things we cannot explain yet, done for reasons that we don't know, but there is no reason to lump things that have explanations /masks, hats, etc/ with those we have not /like the Nasca lines/.

That's exactly my opinion. Just because it's a mystery doesn't mean it's bound to be aliens.