Laysan Island

This small, remote island has a hypersaline lake in its central part and endemic species of animals and plants including endemic duck and finch.

Kure Atoll

The northernmost coral atoll in the world. The only island – Green Island – is a habitat for hundreds of thousands of birds.

Haleakala silversword grove

This plant – Argyroxiphium sandwicense subsp. macrocephalum – grows only in the alpine desert on the top of the Haleakalā volcano. This unusual succulent plant grows up to 2 meters tall and flowers once per 15 – 50 years.

Makauwahi Cave

The largest limestone cave in Hawaii, the richest fossil finds in the Pacific. Graveyard of ancient Hawaiians. The cave contains a sinkhole with a lake. This lake contains a 10,000 years-long history of sedimentation thus providing a very detailed and precise timeline of a natural evolution in Hawai’i. Here have been found remnants of numerous species of extinct birds.

Kazumura Cave

The longest lava tube in the world, 65.5 km long and up to 1,102 m deep.

Waipio Valley

Up to 610 m deep valley with steep walls and several large waterfalls, including Hiilawe Waterfall. Contains the steepest paved road in the US and possibly, world. The average grade of this road is 25%.

Waimea Canyon

This impressive canyon has been formed by the Waimea River. It is some 16 m long and up to 900 m deep.

Pelekunu – Wailau Cliffs

Some of the highest sea cliffs, up to 1,010 m high. Drop is not vertical. Contain some waterfalls that thus belong to the highest ones in the world, including approximately 900 m high Olo’upena Falls and 840 m high Pu’uka’oku Falls.

Iao Needle

This impressive, jungle covered cinder cone rises 686 m high.

Honopu Valley

Deep valley in a very dramatic, impressive natural setting. Impressive waterfalls. 27 m high natural arch, which makes a powerful sound when hit by northern winds. Possible living site of pre-Hawaiian people – menehune – until the middle of the 19th century.