Oahu Ancient Site Guide

Lualualei Valley

Lualualei Valley is Oahu's largest leeward coastal valley, with Waianae Mountain views, ancient volcanic origins, military history and Maili nearby.

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Lualualei Valley

Lualualei Valley, Oahu

This is the largest coastal valley on Oahu's leeward (west) coast. It is backed by the Waianae Mountain Range, which is one of two mountain ranges on Oahu (the Koolau Mountain Range is the other one). Both mountain ranges were formed by volcanic activity and the older one is the Wai'anae.

The oldest lava at Lualualei dates back 3.9 million years. During the volcano's active years, its center of activity was right here, at Lualualei Valley. This is where Oahu originated.

Inside the valley are a few government communication stations, as well as the U.S. Navy's weapons storage facility for Pearl Harbor. The small town of Maili is located at the base of the valley.

Key Features

Largest leeward valley on Oahu
Broad valley inland from Maili and Waianae
Oldest Lualualei lava dates to about 3.9 million years ago
Backed by the Waianae Mountain Range
Parts of the valley are used for government communication and Navy facilities
Much of the valley is restricted or private land
Maili Beach Park and Lualualei Beach Park sit near the coastal base
Visitors should stay on public roads and legal beach park areas

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Frequently Asked Questions

Where is Lualualei Valley?

Lualualei Valley is on Oahu's leeward side, inland from Maili and near Waianae, with the Waianae Mountains forming the inland backdrop.

Why is Lualualei Valley important geologically?

The oldest lava at Lualualei dates to about 3.9 million years ago, connecting the valley with some of Oahu's earliest volcanic history.

Can visitors drive deep into Lualualei Valley?

No. Much of the valley includes restricted government, military and private areas. Visitors should not enter private roads, secured gates or facility areas.

What town is near Lualualei Valley?

Maili sits near the coastal base of Lualualei Valley, with Waianae farther along the leeward shore.

What can visitors see nearby?

Nearby public places include Maili Beach Park, Lualualei Beach Park, Waianae and the Farrington Highway West Shore drive.

How should visitors approach this area?

Respect secured areas, avoid trespassing, stay on public roads and beach park areas, and treat the valley as a place with cultural, geological, environmental and military significance.