The indigenous community is the owner, actor, and benefit receiver of cultural resources, which also plays a vital role in conservation and management. Cultural resource sustainability depends on the conservation effort performed. This research aims to comprehend the types of conservation performed by the indigenous community to preserve cultural resources. The research also examines the suitable conservation approaches that support the cultural resources sustainability in traditional villages. This research applies a qualitative research design. The data is collected through observation, interview, and literature review. The data is analyzed using qualitative descriptive and comparative methods. Sumba Island is famously known for living megalithic traditions, meaning the indigenous community is closely connected to their cultural heritage. Ideally, the living heritage conservation approach can be applied to preserve Central Sumba's cultural heritage. The developments of science, technology, and social culture create several shifts, such as in the functions and the materials of the cultural heritage, like the traditional houses and gravestones. The processes of adaptation and resistance that occur in the indigenous community hopefully could go together with the effort to preserve the cultural heritages, both the tangible and the intangible ones. Marapu, the Sumba people's root of identity with the ideology of kinship and mutual cooperation, is the key to the success of living heritage conservation.