The Koʻolau Range is a volcanic mountain range located on the island of Oʻahu in the state of Hawaii. Stretching approximately 30 miles, it features steep cliffs and lush valleys, formed by volcanic activity millions of years ago. The range is known for its dramatic scenery and diverse ecosystems, making it a popular destination for hikers and nature enthusiasts. The highest peak in the Koʻolau Range is Konahuanui, which rises to about 3,150 feet. The range plays a crucial role in the island's climate, capturing moisture from trade winds and creating a unique environment. It is also home to various endemic species, contributing to Hawaii's rich biodiversity.