Front view of Remarkable Stones; Side view of Remarkable Stone, Tonga, c1880 to 1889. The Haʻamonga trilithon was built in the 13th century by the 11th Tuʻi Tonga Tuʻitātui. (Information from Daly, Martin (2009). Tonga : a new bibliography (2nd ed). University of Hawaiʻi Press, Honolulu)