Akaka Falls

Akaka Falls, 442 feet (135 m) high, is one of many waterfalls along the
Hamakua coast of the island. The stream has cut through a layer of ash
to the more resistant lava below. As the falls retreat, they leave a
deep gorge downstream.
The Wailuku River follows the boundary between Mauna Kea (to the north)
and Mauna Loa (to the south). Highway 19 crosses the river and enters
the town of Hilo.
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