Ancient sun temple possibly found in Alberta, Canada

From the "life is awesome" department:

An academic maverick is challenging conventional wisdom on Canada's prehistory by claiming an archeological site in southern Alberta is really a vast, open-air sun temple with a precise 5,000-year-old calendar predating England's Stonehenge and Egypt's pyramids.

The central cairn is surrounded by 28 radiating stone lines, four of which align with the cardinal points of the compass. Those lines are encircled by another ring of stones.

A few metres away lies a stone semicircle, with a large stone between it and the central cairn. The left edge of the semicircle lines up with both the central stone and the right edge of the cairn, and vice versa.

The rising and setting sun on both the longest and shortest days of the year lines up precisely with V-shaped sights in the temple's rocks. The spring and autumn equinoxes, when day and night are equal, are similarly marked. They are not the equinoxes of the Gregorian calendar currently used, however, but the true astronomical equinoxes.

Freeman is convinced the temple contains a lunar calendar as well, because the 28 rays radiating from the central cairn correspond to the length of the lunar cycle.

The Star

But our Native Americans did not have such technologies. How long have humans been this smart? And where did they originate?