image courtesy of Mack Horton (USA)
image courtesy of Mack Horton (USA)
image courtesy of Peter Sundstrom (Australia)
imagen courtesy of Rob Passchier (the Netherlands).The superb 504 L don the picture belongs to Rainer Wilken, from Germany.
I've borrowed these pictures from other sites in the web (see links).If somebody believes that I'm not respecting any copyright, just emailme and I will erase the picture.THANKS!