Oil has become a problem for indigenous communities such as the U'Wa, who live in the eastern provinces of Arauca, Casanare, Santander, Norte de Santander and Boyaca.
BBC: Colombia's indigenous peoples face uncertain future
2.
His companies operate the most lucrative of Mineralco's concessions in Boyaca, and such is his power that he can demand the right to buy high-quality stones found elsewhere.