Last Saturday night in SF was the big Trey Ratcliff photowalk, the last stop in the tour. Hundreds of photographers gathered on Pier 39 to walk the Embarcadero down to AT&T park. People kept asking: What is this gathering about? All I could say was a very popular photographer is leading a group of people on a walk through the city. His name is Trey Ratcliff, his website is StuckInCustoms.com and he's a cool guy.