It slid down the slope a thousand years past the remains of buffalo, then 10,000 years over glacial rock and on down through the millions of years to coal deposits from ancients swamps and beyond to the rocky remains of dinosaurs, all the while thrashing the aspens' bright new leaves and roiling the waters of the Red Deer River.
(It; slid; down; the slope a thousand years past the remains of buffalo)
It
slid
down the slope a thousand years past the remains of buffalo