Hālona Blowhole located on terrain feature Oahu
Hālona Blowhole is a rock formation and a blowhole on the island of Oahu, Hawaii off of Hanauma Bay at Hālona Point overlooking the Pacific Ocean. In Hawaiian hālona means "lookout".Description
On windy days when the tide is high, the ocean breeze sends the waves rolling on to the shore where the rock formation then shoots sea spray high into the air through the cave acting like a geyser. The blowhole is most active when the tide is high and the winds are strong, and it can shoot sea spray up to thirty feet high in the air.Hālona Point is a tourist spot, with visitors coming for the scenery, the beach at the cove, and in the winter as a spot to go to see humpback whales (whose blowholes are not to be confused with this formation) or Honu turtles (Hawaiian Green Sea Turtles). The blowhole is perhaps the most popular rock formation of its kind found in Hawaii.