Lualualei Valley
Lualualei Valley is the largest coastal valley on Oahu's leeward side and the ancient volcanic origin point of the island. Framed by the Wai'anae Mountain Range, this fertile valley holds historical, geological, and strategic significance, including U.S. Navy installations and a rich volcanic past dating back nearly 4 million years.
Lualualei Valley, Oahu
This is the largest coastal valley on Oahu's leeward (west) coast. It is backed by the Wai'anae Mountain Range, which is one of two mountain ranges on Oahu (the Ko'olau 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 Ma'ili is located at the base of the valley.
Key Features of Lualualei Valley
- Largest coastal valley on Oahu: Spanning the west side of the island and backed by the Wai'anae Mountain Range.
- Ancient volcanic site: The oldest lava on Oahu - 3.9 million years old - originates from Lualualei, making it the island's geologic birthplace.
- Military presence: Home to U.S. Navy communication stations and a Pearl Harbor weapons storage facility.
- Scenic mountain backdrop: Surrounded by dramatic ridgelines and red soil terrain typical of Oahu's leeward side.
- Located near Ma'ili: A small residential community at the base of the valley with access to the coast.
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Frequently Asked Questions
Why is Lualualei Valley geologically significant?
Lualualei was the main eruption site of the ancient Wai'anae volcano. It contains the oldest lava flows on Oahu, dating back nearly 3.9 million years.
Where is Lualualei Valley located?
The valley lies on Oahu's leeward coast, near the town of Ma'ili, and is framed by the Wai'anae Mountain Range.
Is Lualualei Valley a military area?
Yes, the U.S. Navy maintains communication facilities and a weapons storage site within the valley, which are off-limits to the public.
Can I hike in Lualualei Valley?
Most of the valley is not accessible for hiking due to military restrictions, but nearby ridges and surrounding areas offer scenic views.
What does the name "Lualualei" mean?
"Lualualei" is often translated as “beloved place” or “flexible lei,” though interpretations vary. It reflects the valley's cultural and natural beauty.