This image was made a short distance away from the Squamish forest service road that runs the length of the Squamish Valley, north of Vancouver. A scree is the area of loose rock below a cliff face, it is a dangerous and difficult place to travel through when it cannot be avoided. The rocks making up the scree vary in size from football sized to car sized.
Moss is one of the first plant forms to take hold on scree rocks. It doesn't need soil and actually starts the process of breaking down the rock to become soil. Here we see a thick, healthy looking layer of moss in the wet month of February. In the summer this very moss will be dormant, it will appear dried and died but it will only be waiting out the parched summer.