Perhaps you've heard of a place in New Hampshire that calls itself "America's Stonehedge"?

It's supposedly 4000 years old and "proof" of some early European landing or somesuch. It's also a GREAT example of what I call "forgotten history" - that is, it's an excellent example of what happens when technology advances so much people forget their own recent history.

They call this the "sacrificial table" and that rim around the edge no doubt conjurs up images of blood sacrifice, with the groove to carry it away...

Except it's actually a table for making lye. Early soap-making in New England used exactly that sort of table. You can probably find one at any museum for early colonial life. There are even photos of people still using those tables and techniques as of the turn of the century!

The whole supposed "stonehedge" site is actually an early colonial farmhouse. The reason people see "nordic" influences is simple enough. Many settlers were indeed from northern Europe.

But people forgot their own past, and forgot the site, and then created a new explaination. It's a hoax.