【Can be reached using the Beppu Excursion Pass!】
A five-minute walk takes you to the crater of the 'hell', from which steam rises magnificently upwards, allowing you to feel the pulse of the earth in a place truly overflowing with nature's energy. The striking Tsukahara Plateau and Mt. Yufudake can also be seen.
The crater was also featured in NHK's 'Bura-tamori' programme on 4 February 2017. In this programme, Emeritus Professor Yusa Yuuki of Kyoto University explains that the hot spring water that lies underneath the Garandake volcano serves as the source of all Beppu's hot springs and, indeed, the source of all hot water in Beppu.

【Can be reached using the Beppu Excursion Pass!】
～In existence since the Heian period, Uchiyu is a highly acidic hot spring located in the middle of Mt Garandake.
【Characteristics】
●The highest concentration of iron ions in the country.
●Second highest in the country in terms of acidity.
●Second highest in Japan for the amount of aluminium ions.
●One of Japan's three major medicinal hot springs
All of the above-mentioned properties are rare and highly valued throughout Japan. 
【Water quality specifics】
Acidic, iron-containing (II,Ⅲ)-aluminium sulphate spring

【Can be reached using the Beppu Excursion Pass!】
Enjoy the pure spa waters of Tsukahara Onsen whilst immersing yourself in breathtaking natural surroundings that seem to spread out before your very eyes.
～In existence since the Heian period, Uchiyu is a highly acidic hot spring located in the middle of Mt Garandake.
【Characteristics】
●The highest concentration of iron ions in the country.
●Second highest in the country in terms of acidity.
●Second highest in Japan for the amount of aluminium ions.
●One of Japan's three major medicinal hot springs
All of the above-mentioned properties are rare and highly valued throughout Japan. 
【Water quality specifics】
Acidic, iron-containing (II,Ⅲ)-aluminium sulphate spring

Steamed eggs soaked in hot spring water and steamed for about 20 hours in the fumaroles of Mt. Garandake, where the Tsukahara Onsen Crater Spring is located.
500 yen (tax included) for a pack of six.
Great as souvenirs!

Cold mineral spring water, gushing out from the mountainside of Mt. Garandake (approximately 800 meters above sea level), is available to buy at reception or by mail order. 
Many people use it for atopic dermatitis, heat rash, acne, pimples, athlete's foot, burns, insect bites, itching, cuts, etc., and it boasts a high rate of repeat customers. 
For first-time users, the spray type (600 yen including tax) is recommended.
Great as souvenirs!