This study discusses changing the nature reserve status of the Mount Mutis area into a national park and ecotourism park in West Timor. The Atoni Pah Meto tribe considers changing status a desacralization of the environment. This environmental communication study uses CuDA communication ethnography and examines aspects of cultural communication to understand both explicit and implicit meaning in communication practices. This research examines the identity intertwined with places, experiences, and feeling associated with the Mount Mutis area. The meaning and narrative of the Mount Mutis area from the perspective of indigenous peoples are communicated to the Government and the wider community's interest. The result of this study shows that indigenous peoples view themselves as an integral part of history with sacred values of nature, culture, history, and spirituality in Mount Muti's area. Within the area, there is a network of sacred forests as the birthplace of the clan and the ancestral history of the Atoni Pah Meto tribe, which encourages indigenous peoples to protect the Mount Mutis area without any strings attached. From their perspective, protecting the Mount Mutis area has noble values and is a sacred duty. This study helps understand communication behavior intertwined with cultural discourses and places or spaces in nature, which results in public actions and policies for preserving nature.