Consists of monolithic rocks & stone structures scattered across about 30 acres.  Speculation abounds, but no one is certain how or when these mysterious walls & chambers were constructed.  Some of the rock monoliths act as an astronomical calendar that tracks solar & lunar events like summer & winter solstices. 
     
	
  
	
	
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				105 Haverhill Road Salem, New Hampshire  03079
				 
				
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