By November 2011, the Batangas government proposed to establish a Hollywood sign on top of the Taal Volcano, which at the time was a UNESCO tentative site, receiving criticism. The government later retracted the proposal. In March 2012, the Swiss-based Jaeger-LeCoultre initiated an auction which benefited the conservation programs for the Puerto-Princesa Subterranean River National Park. In June 2012, the Rice Terraces of the Philippine Cordilleras was officially removed from the list of UNESCO World Heritage Sites in Danger, marking the country's most successful cultural landscape rehabilitation achievement. In the same month, the Puerto Princesa Subterranean River National Park was declared as a Ramsar wetland site under the Ramsar Convention of UNESCO. In September 2012, the Philippines participated in the Joint International Symposium: Involving Communities for Better Conservation and Management of Asian World Heritage Sites held in South Korea. In October 2012, the Tubbataha Reefs Natural Park won the Future Policy Award for marine resource management, the first Philippine site to receive the prestigious international conservation award. On the same month, the Heritage City of Vigan was recognized for best practice in World Heritage Site management.