The screenshots beneath hail from YouTube; the camera pans from the left to the right screenshot.
Is 'cliff' the correct term?
Can a 79 y.o. man hike this safely?
That looks like the top of the Montagne des Érables, the highest point in Parc national des Hautes-Gorges-de-la-Rivière-Malbaie. The shot on the right is pretty much the same as the current picture on the Wikipedia article.
In order to reach the trails to l'Acropole ["Acropole des draveurs" is the name of the hike to the top, as I understand it], hikers must take a bus from the reception. The hike is 10 km round trip with an elevation gain of approximately 800 m (2,600 ft).