pyre, pile, ivory, elephant tusk. 柴火堆, 堆, 象牙, 象牙

Firemen stand by as pyres of ivory are set on fire in Nairobi National Park, Kenya, April 30, 2016.
May 1, 2016  http://www.voanews.com/media/photogallery/may-1-2016-day-in-photos/3310635.html

A pile of elephant tusks burns during an ivory burning event at the Nairobi National Park in Nairobi, Kenya, April 30, 2016. Kenyan authorities set fire to 105 tonnes of elephant tusks and some 1.35 tonnes of rhino horns that had been piled into a dozen giant pyres on 30 April to demonstrate its commitment to combat poaching of elephants and rhinos. This is the largest single destruction of ivory conducted by any country in history, says the Kenya Wildlife Service (KWS). While Kenya is home to some 35,000 elephants, some 30,000 elephants are believed to be killed every year by poachers for their tusks. (DAI KUROKAWA/EPA)
Photos of the day - April 30, 2016
https://www.yahoo.com/news/photos-day-april-30-2016-232021372/photo-p-pile-elephant-tusks-burns-photo-232021315.html