A visit to a traditional Uma longhouse, the communal dwelling of the Mentawai people will reveals a way of life untouched by time. These longhouses, shared by several families of the same ancestry, serve as the heart of the community, where customs and traditions are passed down through generations. Central to Mentawai spirituality is the Sikerei, the tribal shaman, who is believed to have the ability to communicate with spirits and restore balance between humans and nature. Through Punen ceremonies, the Sikerei leads rituals aimed at maintaining harmony within the soul, the tribe, and the surrounding environment. These sacred traditions offer visitors a glimpse into one of the world's most enduring and spiritual indigenous cultures, making Siberut National Park not just a destination, but a journey through time and tradition.Beyond its natural beauty, Siberut National Park offers a deep cultural immersion into the traditions of the indigenous Mentawai people. Living in harmony with the forest, they uphold animistic beliefs and ancestral rituals, viewing nature as a living entity with a soul. Visitors can engage with their customs, learning about spiritual practices, medicinal plants, and ancient survival techniques.