Louisiana’s coast is dotted with hundreds of mounds built by indigenous people hundreds of years ago and now threatened by coastal erosion. The mounds along Bayou Grand Caillou in Terrebonne Parish sit in an endangered marsh on property owned by land developers. In this film, the Chauvin family, members of the United Houma Nation, fight for access to the sacred space, attending public meetings with state officials, imploring the landowner to save the mounds, and seeking to define the meaning of home and cultural heritage amid a rapidly changing landscape. Director Katie Mathews is directing and producing Post Coastal, a series of documentary shorts about coastal land loss in Louisiana, with New Orleans Video Access Center (NOVAC). She consulted with Tulane University archaeology professor Jayur Mehta for Unleash the Mounds. Prior to her work in film, Katie worked as an anthropologist and ethnographer at global design firm IDEO, where she led qualitative research, using individual stories to inspire new systems in education and the public sector.