An investigation at the famous Haʻamonga ʻa Maui Trilithon and the Langi pyramid platforms of ancient Tonga, located on a remote South Pacific island. There are 28 'Langi' pyramid platforms that are of megalithic construction, and the ancient capital city and port was called Mu'a, that some researchers say may be connected with the lost continent of 'Mu' or Lemuria.