Iranians picnic in a park to mark the Nature Day in Ramsar city, northern Iran, April 2, 2014. Iranians went out of their houses and stayed outdoor to celebrate Nature Day on the thirteenth day of Iranian new year as a Persian culture. (Xinhua/Ahmad Halabisaz)
Iranians camp in a park to mark the Nature Day in Ramsar city, northern Iran, April 2, 2014. Iranians went out of their houses and stayed outdoor to celebrate Nature Day on the thirteenth day of Iranian new year as a Persian culture. (Xinhua/Ahmad Halabisaz)
