There are actually virtually 100,000 folks lacking in Mexico, in line with figures launched by the Nationwide Search Fee.
The bulk have disappeared amid the drug warfare violence of the previous decade and a half, with most being killed by drug cartels and dumped in unmarked graves.
Relations throughout the nation have taken on the duty of looking for their lacking family members themselves.
BBC Correspondent Will Grant joined one group looking out the inhospitable desert of the northern state of Sonora.
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