There were traitors in Ndengei's camp, who were conspiring with the enemy, and carrying food to him by night. These men were seized, and being found guilty on their own confession, were exiled from Kauvandra for ever. They left the mountain, some going towards Matailombau, others towards Navosa. Now, when Ndengei saw that he could not prevail against the fortress, he sought out one Mbakandroti, a man related to the carpenters, who had chosen to take part with Ndengei against his own kin, and bade him devise a plan for betraying the fortress. That night a spirit appeared to Mbakandroti in a dream, and told him to cut down a _vungayali_-tree that grew close to the rampart. And when he had related his dream, one Vueti was appointed to cut it down. He had scarce laid his stone axe to the root when water began to gush forth from the wound. All that day the water poured into the fortress, and by nightfall it was knee-deep, and rising still. So the carpenters took counsel, and resolved to ask pardon of Ndengei, since the gods were with him. So Ndengei took counsel with his chiefs, and they said, "These craftsmen are too valuable; we cannot destroy them; let them be exiled!" The fountain had now become a mighty river flowing southward from the mountain, and the craftsmen built them canoes in haste, and embarked, and sailed down the stream till they came to a new land, and there they settled. These are the ancestors of the carpenter clan at Rewa.[54] But there was no pardon for the twin brothers; to their exile there was to be no limit. Yet, for Rokola's sake, they were given time to build their canoe. And Rokola built them a vessel such as has never since been seen in Fiji, and named it Nai-vaka-nawanawa (the Lifeboat), and sailed away down the stream into the western ocean, and were never heard of more; only the prophecy remains that one day they will come again. It will presently be related how the false teacher Na-vosa-vakandua turned this prophecy to account. The Epic of Dengei Ko Dengei sa tangi langalanga, "Bongi ndua, bongi rua ka'u yandra Bongi tolu, bongi va ka'u yandra, Sa tambu ndungu ndina ko Turukawa, Isa! nonku toa, na toa turanga, Isa! nonku toa, na toa tamata, Tiko e ulunda na ka rarawa, Au lolova kina, au tambu kana, Matanivanua, mai thithi manda, Mai thithi sara ki Narauyamba, Mo tarongi rau na ndauvavana, 'Kemundrua, ru vanai Turukawa?' Sa tambu ndungu ni vakamataka, Ma lolo koto Kotoinankara, Ma mbunotha no a wai ni matana, Vakasunka me ramothe mai wanka."