okinaEua is a hilly island, the highest peaks are the Teokinaemoa (chicken manure) 312 m, with the grave of the soldier on top, and the Vaiangina (watersprings) 305 m. The island is not volcanic, but was shaped by the rubbing of the Tonga plate against the Pacific plate, pushing okinaEua up and leaving the 7 kilometers Tonga Trench on the bottom of the ocean, a short distance towards the east.