Twin Rocks

Big Island Ancient Site Guide

Twin Rocks

Twin Rocks are offshore lava formations at Onomea Bay, tied to a Hawaiian legend of two lovers who became guardians of the bay.

Twin Rocks
Twin Rocks

The Legend of Twin Rocks, Big Island

These two rocks are located in the offshore waters at Onomea Bay, about 6 miles (10 km) north of Hilo. They can be seen from a nice viewing area that is located inside Hawaii Tropical Botanical Garden (admission fee is $15). This may sound steep for a botanical garden, but this is one of Hawaii's best. It's well worth a visit. The viewing area is located at the mouth of the bay. Along the way, you'll see a large variety of tropical plants and a waterfall.

An info sign at Onomea Bay reads:

The Legend of Twin Rocks

The village of Kahali'i was located on this large point of land which extends into Onomea Bay. Though the village is gone, the descendants of Kahali'i still remember some of the legends concerning the area's landmarks. One story tells of the origin of two rock formations at the head of Onomea Bay that are said to be a young man and woman, known as the lovers of Kahali'i.

Legend has it that one day, a chief of the village spotted many canoes with sails heading shoreward in their direction. Fearing an attack, the chiefs and village elders held a council to determine a course of action. They decided to build a reef to prevent a landing on their beaches. Not having the means to complete the task quickly enough, they asked for two young lovers to be the guides and protectors of the village by giving their lives. Two willing individuals were found.

That night a decree was sent to all who lived at Kahali'i to remain indoors from sunset to sunrise without making any light or sound, on penalty of death. In the light of the new day, everyone went down to the shoreline where they were amazed to find the lovers gone, and in their place two gigantic rock formations at the entrance of the Bay, attached to each other, as if on guard.

The chief informed the people that no canoe could now pass the treacherous currents swirling around the rocks unless allowed to do so by the guardians. The lovers and their offspring still stand today, sentinels at the head of the Bay.

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Steve Lohr

Sat Mar 19, 2016

There is access to the head of the bay and the inlet of the stream which can be reached without paying to go into the Botanical Garden. I am not saying skip the garden, but if you get there late, you can see the rocks and shore without requiring access to the Botanical Garden. The drive on the old highway and the hike down to the rocky shore are well worth the time. And, take your time, there is a lot to see. Many birds, plants, and nice ocean views with the freshwater stream coming to the beach.

Location, Parking and Directions

Twin Rocks are located offshore at Onomea Bay along Old Mamalahoa Highway near Papaikou, north of Hilo. The formations are commonly viewed from Hawaii Tropical Botanical Garden, where trails lead toward bay viewpoints. Check current garden access, hours and admission before visiting.

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Frequently Asked Questions

Where are Twin Rocks?

Twin Rocks are offshore lava formations at Onomea Bay on Hawaii Island's Hamakua Coast, north of Hilo near Hawaii Tropical Botanical Garden.

What is the legend of Twin Rocks?

The legend tells of two young lovers who became rock guardians at the mouth of Onomea Bay to protect their village from attack.

Where is the best place to view Twin Rocks?

Many visitors view Twin Rocks from Hawaii Tropical Botanical Garden, where trails lead toward scenic bay overlooks and coastal viewpoints.

Can visitors swim to Twin Rocks?

No. Visitors should not try to swim to the rocks because currents, waves, slippery shoreline and offshore hazards can be dangerous.

What else is nearby?

Nearby places include Onomea Bay, Hawaii Tropical Botanical Garden, Old Mamalahoa Highway, Hilo and scenic Hamakua Coast viewpoints.