Finally, many Guaymí communities are threatened by environmental degradation caused by both farming and government or corporate exploitation of their land. The Cerro Colorado copper deposit, one of the world's largest deposits of copper ore is located in the comarca Ngäbe-Buglé. Mining in the area, although it is legal because the property rights of subsurface resources belong to the state, poses a great environmental threat as waste materials from extraction and processing pollute local watersheds. Although they may provide temporary income, mining endeavors also have many adverse social and cultural effects in the comarca and most natives are opposed to mineral exploitation on their lands.