Waipiʻo Valley is a valley located in the Hamakua District of the Big Island of Hawaiʻi. "Waipiʻo" means "curved water" in the Hawaiian language.It was the capital and permanent residence of many early Hawaiian Aliʻi up until the time of King ʻUmi. This was a place celebrated for its nioi tree known as the Nioi wela o Paʻakalana. It was the location of the ancient grass palace of the ancient "kings" of Hawaiʻi with the nioi stands. Kahekili II raided Waipiʻo in the 18th century and burned the four sacred trees to the ground. The first chief who had a court in this valley was called Kahaimoelea.
The valley floor at sea level is almost 2,000 ft below the surrounding terrain. A steep road leads down into the valley from a lookout point located on the top of the southern wall of the valley. The road gains 800 vertical feet in 0.6 miles at a 25% average grade, with steeper grades in sections.
More info at Gohawaii.com http://www.gohawaii.com/en/big-island/regions-neighborhoods/hamakua-coast/waipio-valley-lookout/
Address 48-5546 Waipio Valley Rd, Waimea, HI 96743, USA
Coordinates 20°7'4.746" N -155°35'3.788" E