Social factors such as the attitudes of local people should also be taken into account. If a reserve is put up in an area that people depend on for their livelihood the reserve often fails. For example, in Bolivia, the Amboró National Park was expanded in 1991 from 1,800 to 6,370 km². While this was celebrated by conservationists, local people who would be displaced by the expansion were angered. They continued to hunt and log within the park and eventually the park size had to be reduced . Because local people were not considered in the design of the reserve, conservation efforts failed. Many conservationists advocate local people must be included in conservation efforts, this is known as an Integrated Conservation and Development Project.