Keōua then attacked and killed his uncle at Hilo . Kamehameha returned from Maui to the Big Island , and Keōua ambushed them in a thick forest of Paauhau , but the battle was inconclusive ( near coordinates ) . Kamehameha counterattacked and drove Keōua back , in what is known as the '' Battle of Koapapaʻa '' . Kamehameha had brought a cannon salvaged from the ship '' Fair American '' captured at Kaūpūlehu . Keōua captured the piece , but did not have gunpowder nor expertise to use it effectively . After heavy losses on both sides , the commanders each decided to retreat to their secure territory
Kaūpūlehu
Kaupulehu, Hawaii
1790 Footprints