Hāmākua is a district on the northeast coast of Hawaiʻi's Big Island (one of the six traditional districts of the island, known as moku), but also the name of the coastline in the region, the "Hāmākua Coast", approximately 80km long, ending at Waipiʻo Valley and the uninhabited Waimanu Valley. The rainfall due to the prevailing northeasterly tropical trade winds produces steep erosional valleys and cliffs, showing evidence of frequent landslides. The lush vegetation and lack of sandy beaches contrasts sharply with other regions of the island. The district stretches south through the central plateau to the summit of Mauna Loa. To the north beyond Waipiʻo Valley is the Kohala district, with the older volcano Kohala mountain.
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