Local environment enthusiast Ildefonso Vista (L) performs rock balancing as a man watches at Daranak falls in Tanay, Rizal province, east of Manila Sept 5, 2011. Rock balancing is a performance art which involves arranging natural stones usually found on location, in gravity-defying alignments without the need of any additional tools. Environment enthusiasts Leandro Mendoza and Vista pioneered this art form in hope of creating greater awareness among people towards environmental conservation. Picture taken Sept 5, 2011. [Photo/Agencies]