Koga Waterfall is a scenic waterfall located in the Aso. Known for its serene beauty, the waterfall is especially popular during winter when it freezes, creating stunning ice formations. Visitors can enjoy the peaceful surroundings and the natural beauty of the area, which is a popular spot for hiking and photography. Koga Waterfall is also a symbol of the pristine nature of the Aso region, making it a hidden gem for those exploring the area.