OLDEST -- Man-made construction in the United States
Posted by: 
Telomere
N 42° 50.635 W 071° 12.331
19T E 319773 N 4745842
A complex arrangement of stonework - features and objects found here have been studied and tested to establish dates of construction around 4000 years ago; Featured by the History Channel and Yankee Magazine.
Waymark Code: WM7268
Location: New Hampshire, United States
Date Posted: 08/22/2009
Views: 19
Stone chambers, stairs, walls, passageways, wells, drains, and platforms, using chunks and slabs up to 45 tons, show evidence of carved and chiseled work; It appears initially to be an encampment site for an ancient civilization - but as suggested by documentation and analysis, the 20-acre "habitat" in the middle of the site required massive effort and time to construct using primitive methods. The outer ring surrounding this encompasses 100 acres, and has been established as an accurate solar/lunar calendar corrected for the slow tilt of the earth. Whoever made this lived here for an extended period, possessed knowledge of stonework and astronomy, and needed a calendar for ceremonial and informational use. I recommend visiting when you can spend at least 2 hours - the self-guided tour uses a very specific and well-written text, and the details you will encounter (including a creepy "talking" stone sacrificial table) are worth the time. See their website for hours and admission. Bring a flashlight and bug spray.
Type of documentation of superlative status: Scientific, Academic, Media, Internet and local on-site
Location of coordinates: 105 Haverhill Road, Salem, NH 03079
Web Site: [Web Link]
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