Stolen by the Trophy Trade.
Project info

In the month of April the Kenya Wildlife Service catalogued, transported, collected DNA, stacked and eventually burned 105 tons of Ivory and 1.35 tons of rhino horn. It was the largest store of elephant ivory and rhino horn ever assembled in one place. Estimates as high as 9,000 dead elephants lay at the cremation site with a black market value of over USD 172 million.

Ivory and rhino horn have no intrinsic value and this was an African countries no tolerance message to end the trade and to tell the world that these creatures are worth more alive.