"Are there carefully crafted stone structures in Quebec similar to that most mysterious of man-made structures, Stonehenge? The answer is yes, according to biology professor Gerard Leduc, who says he has found evidence of sundials in four different locations in the Laurentians and Eastern Townships."
.....
"The stone complexes, comprising a centre stone and others radiating toward the east and west, may have been used as calendars whereby farmers could, for example, have known when to plant and harvest crops."
Leduc also claims to have discovered:
Unexplained stone walls two to three feet high that begin and end with no apparent purpose, and which are not associated with the fields of farmers.
Grass circles showing up as yellowish rings in green grassy fields, caused by a different type of vegetation. These grass circles are perfect in shape and associated with stone structures.
Trilithons, located at the sundial sites, consisting of three closely grouped rocks.
(Morrissy, John; "Stonehenge in Quebec," Stonehenge Viewpoint, no. 79, p. 3, Winter 1988.)