stone henge not spot on but close enougth for model railways and such sorts of modeling there are the henge circle stl and stones stl the stones are raised in the middle as thats were the hill/mound were its raised so you could edit the stl and put an hill there to print them on are seperate the shells and print a stone at a time i would done that for you but there are a lot of stones and i dont get paid for this lol enjoy

edit i made the the inner stones in 2 parts so you can print easyer