This study provides the interplay between the engagement of Kasepuhan Ciptagelar, an indigenous group living in the area of Halimun Salak National Park, tourism development, and ecological sustainability agendas through employing ecofriendly behavior. Practicing local spirituality rooted in an indigenous belief, the group has proven that the indigenous lifestyle is compatible with the conservation goal of the national park. Moreover, previously considered illegal inhabitants, the group living in a cultural landscape endowed with rich natural and cultural tourism resources has taken tourism to deal with policies neglecting them for years. Employing the ethnographic method through a series of fieldwork, findings showed that tourism, besides providing steady economic benefit for the people and a ground for cultural expression, is also a vehicle to disseminate ecofriendly indigenous living styles to wider audiences. Kasepuhan has employed its traditional forest zoning to limit the exploitation of forests in its cultural living space. Unlike state laws, the adat’s law is considered effective in protecting forest areas from exploitation, especially by the community members. Thus, in this case, indigenous tourism can be taken as an alternative way and a model to enhance ecofriendly lifestyles for urban and modern tourism projects, which is often incompatible with the effort of gaining the Sustainable Development Goals (SDGs).