People will flock to a site in New Hampshire on Wednesday's autumnal equinox, where they'll watch the sun rise or fall over massive chunks of granite and decide whether they're standing amid ancient history or pure hooey.

This is "America's Stonehenge," a weird grouping of rock configurations named for the mysterious formation on England's Salisbury Plain. Believers say it's a thousand or more years old while skeptics maintain it was built by a 19th century shoemaker.

Owner Dennis Stone says testing shows the site is as old as 4,000 years, built by Native Americans or perhaps ancient Europeans who arrived millennia before Columbus.

Researchers believe it was more likely a homestead built starting in 1823 and so drastically modified since then that its true origin may never be known.