The Spouting Horn is a natural blowhole located on the southern coast of Kauai, one of the islands in Hawaii. It is formed by ocean waves crashing into a lava tube, forcing water to shoot up through a hole in the rock. This creates a spectacular display of water spouting high into the air, especially during high surf conditions. Visitors to the Spouting Horn can enjoy the sight and sound of the water as it erupts, often accompanied by a loud hissing noise. The area is also known for its scenic views of the coastline and is a popular spot for photography and sightseeing.