Stone Ruin research of west Quebec

The mystery of the stone constructs of northeast Usa has been evolving since the first settlers arrived and began documenting them.
Since then there have been several thousand of these stone constructs found and documented from as far as the Ohio Valley. Here, the structures seem to start where the mysterious earthen mounds and works of the southern Usa stop. Are these the continuing and evolving works of the mysterious ancient civilizations to the south? It is in the eastern Ohio Vally where a Stone pyramid mound was found and dismantled in the mid 1800's. Could this be evidence of the blending of the north and south cultures and the intersecting area where this mound building culture began to work with stones and stone structures? Both the earthworks of the southern states and the stone works of the northeast have been constructed with celestial alignments. Both cultures have existed for thousands of years before the European settlers arrived. Both remain a mystery.