The Aso-Kuju National Park is home to Mt. Aso, one of Japan’s most active volcano. The Aso Caldera is one of the world's largest calderas stretching 18 km from east to west and 25 km north to south. It is surrounded by verdant grasslands which were first formed by volcanic ash soil. The national park offers activities like paragliding, horse riding, walking tours, hot air balloon rides, kayaking and even a helicopter tour to view the active volcano from the top. You can also enjoy the rejuvenati