Rock in a hard place

In Fish Creek Park on a hillside.

http://farm5.static.flickr.com/4040/...d4a8b894_b.jpg

Cool! Looks like sandstone, which often has fossils in it. Did this slab of shattered stone?

really interesting rocks there! How on earth did they get there?

It looked to me like there was a mini-landslide where a small cliff broke off from a hillside, bouncing rock into the bent trees, some of which snapped off and/or were uprooted. There was a lot of debris farther down the slope, the bottom of which is a creek. Winter damage caused perhaps by water getting into cracks and expanding and contracting with temperature changes.
Mike