Langi ‘o Olovehi, a royal burial ground near the Velata Mound Fortress, is a significant historical site in Hihifo on Lifuka Island. This tomb, constructed in the late 1700s for Nanasipau’u, the eldest sister of the Tu’i Tonga (King of Tonga), offers a glimpse into ancient Tongan history. Tongan-speaking visitors can learn about its past from an interpretation panel written in Tongan, which highlights its importance and the belief that individuals were buried around the tomb to serve Nanasipau’u in the afterlife.