What the documentary was theorizing is that the iron came from the moon by
way of a previous civilization that came from the moon to earth.
Not that I believe conspiracy theories and after all, they are just theories. You
and I can create our own theories too. What I like about these type of programs
is that it does get the brain thinking of the possibilities.
There is another doc I watched about 'Ancient Artifacts' that is interesting too.
In one segment some people went to dig for 'gemstones' as was common for
them to do most days. I say gemstones but it could be other types of rock such
as hematite, etc. They dug some stuff up and took it home. As they were viewing
some of it, there was something deep inside on chunk. They said the rock was
millions of years old and there could not be anything recent inside. However,
what was found inside was a spark plug. Still a mystery today a how a spark
plug got inside a rock of so called millions of years ago.