A dark Lichen found growing on a rock at Bragg Creek Provincial Park on 20th August. My Lichen photos are, no doubt, of very little interest to most of you, but I do want to include them in my Fungi, Lichen and Slime Molds Sets : ) Some lichens are glorious colours, but others, like this one, are dark and rather unappealing to those who don't study them.

I think this is Umbilicaria hyperborea, 'Blistered Rock Tripe' - Doug Waylett has a similar photo on his photostream, with this ID.