Kalalau Valley, Kauai – The Kalalau Valley is located on the northwest side of the island of Kauaʻi in the state of Hawaiʻi. The only legal ways to access the valley are by kayak or by hiking the Kalalau Trail.
The valley is renowned for its natural beauty; it is surrounded by lush cliffs more than 2,000 feet (610 m) high. The valley bottom is broad and relatively flat, with an accessible region about 2 miles (3.2 km) long and 0.5 miles (0.80 km) wide.
The abundant sun and rain provides an ideal environment for flora and fauna. Many native Hawaiians lived in the valley into the 20th century, farming taro from a vast complex of terraced fields.
The valley is home to many rare species, including the endangered plant Dubautia kalalauensis which was named for the valley and is found nowhere else in the world. Other endemics include the endangered Schiedea attenuata.