Chinoike Jigoku

Hot mud, a volcanic mudflow formed through chemical reactions in underground layers under high temperatures and pressure, gushes to the surface and accumulates in this pond. Its eerie appearance has led it to be called a “hell” since ancient times. Covering approximately 14,000 sq. ft., the pond has existed for over 1,300 years. Today, the surrounding area has been developed with safety measures in place, making it one of Beppu’s best-known tourist attractions.

Rich in iron oxide, magnesium oxide, and other minerals, the hot mud is distinguished by its deep red color, which makes the pond look as though it were filled with blood. Bubbling and steaming, the scene resembles a vision of hell itself. Seen up close, it conveys the immense power of nature.

The Gokurakutei restaurant is also located on the grounds. Look for its distinctive dishes available only here, including Hell’s Paradise Curry, made with plenty of tomato puree to evoke Chinoike Jigoku, and vivid red beet soft serve.

The gift shop also exclusively sells Chinoike Ointment, made with hot mud from Chinoike Jigoku. This traditional treatment for skin conditions has been passed down since the Meiji period and is said to be effective for chilblains, burns, and chapped skin. Many Oita residents have used it for years.