Assam's Kaziranga National Park, home to the world's largest population of one horned rhinos and also a UNESCO World Heritage Site, has seen an alarming number of poaching incidents over the last two years. Rhino horn is a lucrative commodity in international markets, especially south-east Asia. In eight months this year, 20 rhinos have been poached at Kaziranga. Two more were killed by poachers when they strayed outside the park. In 2012, 18 rhinos were killed.