Is it friendly?

Location: Victor Avenue
Date photo taken: 14 March 2015

Seeing this hand reaching out from the grate in the sidewalk gave me a start at first, but I quickly decided it was a friendly hand. What you can't see is that it's reaching out toward another green hand extended from another grate further down the sidewalk. I feel like if I dropped my keys down that grate, whatever this hand is attached to would retrieve them for me.