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Natural Hot Springs

Become one with nature and feel the warmth of natural hot spring.

We have prepared a variety of baths, including an open-air bath where you can enjoy a sense of unity with nature and feel the changing seasons with your skin, a large observation bath overlooking Asogogaku (five mountains of Aso) Gozan, and a private bath.
Have a time to be healed by the warmth of the earth.
  • Zekkei hana-no-yu, Open Air Bath

    Natural planetarium with special seats

    An open-air bath with a sense of openness, with its magnificent Aso prairie.
    The open-air bath of this facility, "Zekkei hana-no-yu, " is located a little away from the inside of the facility and has reduced lighting at night.
    By reducing the bath and surrounding lights, you can see the starry sky from the open-air bath.
    In the morning or in the daytime, the magnificent Aso prairie opens in front of you, and you can enjoy an open-air bath full of open space.
    Soak in the bathing water and enjoy the natural planetarium in the evening and the natural panorama of the day in the morning, soaking up the nature of Aso changing its expression every season.
    Hot spring bath hours
    summer, 5:30 to 23:00 / Winter, 6:30 to 23:00
  • Senshin-no-yu, View large public bath

    Warmth of natural hot spring felt while looking at Asogogaku (five mountains of Aso)

    There is also a bubble bath in the spacious bath.
    You can overlook Asogogaku (five mountains of Aso) Gozan because the front is covered with glass.
    Please taste the transition of the four seasons while soaking in natural hot spring water.
    Hot spring bath hours
    a.m., 5:30 to 10:00 / afternoon, From 15:00 to 24:00
  • Gogaku・Autumn Foliage, Private Bath

    Relaxed without hesitation in a private hot spring

    A little extravagance that extends the leisurely limbs.
    You can relax without hesitation in a spacious bath.
    Gogaku are two places, Gogaku and Autumn leaves, so please ask at check-in if you are using it.
    Please enjoy the time of relaxation only for your family.

    ※Please be aware that the use of the private bath will be charged separately.
    Hot spring bath hours
    From 16:30 to 23:00
    Usage fee
    1,000 yen / 50 minutes
  • Pure water that adds nothing

    The hot spring Izumigen of this facility is located in Nishi Kurokawa.
    The temperature of the spring source is as high as 49.7 degrees, and by pulling from there, it will be just a nice addition.
    There is no need to add water, so you can feel the goodness of natural hot spring directly.
    Hot spring qualities
    Simple hot spring[Hypotonicity, Weakly alkaline, Takaonsen]
    ■Izumi: 49.7 ° C
    ■ph value: 8.14
    ■radon[Rn]: Radon content, 5.05x10(-Ten)←, -10th power Ci / Kg
    Neuralgia, myalgia, arthralgia, fifty shoulders, motor paralysis, inside out, lottery, coldness, fatigue recovery, etc.
  • Kurokawa Onsen Hot Spring Hopping Tour

    If you have a Nyuto Tegata(onsen-hopping pass) (1 sheet / 1,300 yen), you can spend 3 days of hot springs in 3 open-air baths.
    Nyuto Tegata(onsen-hopping pass) are sold at the front desk. Please ask the front desk if you wish.
    We also offer a free transfer to Kurokawa Onsen Town. (About 10 minutes by shuttle bus)
    Specifically, please see the information page of Kurokawa Onsen Town.

    Kurokawa Onsen Nyuto Tegata 1,300 yen

Hot Springs

Kurokawa Onsen

Open Air Bath

Yes (both men and women (Time shift included) · Not reserved)

Private Bath

Yes (There is a condition)

Number of baths

"Open-air bath] Man: 1 woman: 1 mixed bath: 0
[Inner bath] Man: 1 woman: 1 mixed bath: 0
[sauna] Man: 0 Woman: 0 mixed bath: 0

Other bath facilities

Outlook bath

Hot spring tax

Hot spring tax Adult 150 yen separately.

Hot Spring Qualities

Simple hot spring[Hypotonicity, Weakly alkaline, Takaonsen]


49.7 ° C

ph value



Radon content, 5.05x10(-Ten)←, -10th power Ci / Kg

Open Hours

Open Air Bath: Summer 5:30 to midnight 23:00 Winter 6:30 to midnight 23:00 / Observatory bath: From 5:30 am to 10:00 pm From 15:00 to 24:00 / Private bath: From 16:30 to 23:00