A problem is that as consumers we are also part of this capitalist multi-national destruction. (An accurate model of how deep we are into the 'machine' can be constructed by measuring our individual CO2 output, in tonnes, to the atmosphere).
Whatever remains of the oral tradition for constructing the monuments is with the local drystone wallers. The proof of that statement is to look at the waller's work and to look at the front of Newgrange - or the Skara Brae huts. If the waller can make it, then he demonstrates an unbroken link.
Maybe ?