This 3 hour small group tour provides an informative exploration of the eastern regions of the island of tongatapu in the kingdom of tonga the first stop is the place where captain cook landed on the 30th of april 1777 you will visit the ancient royal terraced tombs of tongan kings known as the langi its construction is an engineering wonder dating back to 1300 bc you will finish with the highlight of your tour at anahulu cave which has a natural underground swimming pool with stalactites an