In the Sacobia Valley tourist and industrial development plans coexist with the Aeta tribe, one of the indigenous communities in the Philippines. This case study demonstrates the potential impact of the arrival of domestic and international corporations on members of cultural communities ; their ancestral land ; their livelihood and way of living. In 1993 the Philippine state created the Clark Special Economic Zone to host industrial, technological and tourist facilities in the Sacobia Valley. Development is widely understood and perceived as bringing about positive change. But what if development destroys the economic base of the local population ? What if economic development creates division instead of enhancing unity ? What responsibility for corporations ?