Koʻolau Range, Mountain range in Oahu, US.
The Koʻolau Range stretches across eastern Oahu with distinctive steep cliffs that rise sharply from the coast. Three major highways tunnel through the southern section to connect different parts of the island.
The range formed millions of years ago as part of a massive volcano that later experienced catastrophic collapse on its eastern side. A pivotal moment came in 1795 when warriors were forced over the cliffs during battles that unified the islands.
The ridge holds deep meaning in Native Hawaiian traditions as a sacred site, with stories about the land's origins passed down through generations. These narratives connect visitors and residents to the spiritual history of the island.
Visit during drier months when visibility is clearer, as higher elevations attract clouds and rain throughout the year. Several trails offer views from different perspectives, so wear proper footwear and check local conditions before heading out.
What you see today is only half of an ancient volcano, as the eastern portion sank into the ocean during a collapse millions of years ago. This dramatic loss of land shaped the formation you observe along the coast.
Elevation above the sea: 946 m
Part of: Hawaiian Islands
GPS coordinates: 21.45000,-157.90000
Latest update: December 7, 2025 09:24
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