Since the mid-1800s, non-Navajo and Non-Indigenous archaeologists and researchers dictated the Navajo people's history a Western scientific lens. The Indigenous Archaeology movement of the 1970s and 1980s gave Indigenous people a voice not present before in modern archaeology. The campaign incorporated values important to Native people like oral traditions, landscapes, and sacred places. The revitalization effort has impelled the Navajo Nation's Heritage and Historic Preservation Department to reclaim its heritage. The Navajo THPO is unique in that it decides what is significant to Navajo history, archaeology, and culture. This Navajo approach to heritage is apparent in the Navajo-Gallup Water Supply Pipeline project. As the waterline weaves a path through a culturally rich landscape, the Navajo THPO uses its tribal laws and Federal legislation to manage and protect its cultural resources.