"South Africa is the last frontier for the rhino," said Pelham Jones, of the Private Rhino Owners' Association. "They have been more or less shot out of the rest of the continent, so poachers are focusing all their considerable efforts on us. We really are under siege." Radical measures being suggested include legalising the rhino horn trade again, using horns from rhino that have died a natural death, or have had them removed in a controlled process by owners and rangers.