Officials from Thailand's Khao Yai National Park, a UNESCO World Heritage site, packed up the garbage dumped by some campers and mailed it back to them. They identified the litterbugs via equipment rental documents and a prescription bottle amidst the garbage. From Food & Wine:
The move was spearheaded by Thailand's Minister of Natural Resources and Environment, Varawut Silpa-archa, who reminded people in a Facebook post on Sept. 14 to take their trash with them upon departure, especially because of the impact it can have on animals looking for food. He added that if they didn't, he would pick up the junk, put it in a box, and return it to their home as a souvenir.[…]
"We applaud Khao Yai National Park and the Minister of Natural Resources and Environment for their commitment to maintaining the beauty and well-being of our country's natural resources," Thailand's director of tourism authority, Charinya Kiatlapnachai, told The Washington Post via email.