What is the name of the famous waterfall in Wailuku, Hawaii, and how high is it?

The famous waterfall in Wailuku, Hawaii is called the 'Iao Needle' or 'Kuka’emoku' in Hawaiian. The Iao Needle is a natural rock formation that is a part of the Iao Valley State Park, and it is surrounded by lush greenery and steep cliffs. It is a popular tourist attraction and a site of cultural and historical significance to the Hawaiian people.

The Iao Needle stands at a height of approximately 1,200 feet (366 meters) tall. It was formed by erosion from the Iao Stream, which continues to flow through the valley to this day. The area is considered sacred by the Hawaiians, and was the site of the Battle of Kepaniwai in 1790, where Kamehameha the Great conquered Maui. Today, visitors can hike to the top of the Iao Needle and take in the stunning views of the valley and the surrounding landscape.

If you're planning a trip to Hawaii, the Iao Needle is a must-see destination for anyone interested in the natural beauty and cultural history of the islands.