Bricks speaking.

These bricks seem to be crowding this tree-stump. The grating was already there to keep down other plants and to act as a barrier between tree and bricked side-walk. The bricks must have crawled over.

These arrows were hard to find - particularly the top one. They remind me of the arrow from Disney's Alice in Wonderland, when the mome raths point the way through the tulgey wood.