The carvings were unveiled this month at an annual meeting of the International Coordinating Commttee.
Criticism has been particularly harsh after a report was released last year by the U.N. Special Rapporteur for Trafficking in Persons.
In the immediate years after the war the country’s art scene was almost non-existent.
In Cambodia, officials have curtailed dredging and suspended sales as they assess the environmental damage caused by sand mining.
