Kirishima Range: Hiking Onami Lake, Mt. Karakuni and Shinmoedake

Last Updated on 28 November 2025 by Cycloscope

Kirishima range and Onami Lake travel guide

How to get there and hike one of the best volcanoes in Kyushu, Japan

Japan, the land of volcanoes, set straight along the Pacific Ring of fire, there are around 118 active volcanoes here, spitfire mountains on alien landscapes.

The Kirishima range is one of the most restless, with 15 active cones (Takachihonomine, Nakadake, Ohatayama, Karakunidake, Tairoike, Ohachi, and Shinmoedake are the most notable) and 10 crater lakes. A powerful place, not to be missed if you’re in Kyushu.

The highest peak is mt. Karakuni and Onami lakes are the highest crater lakes in Japan, and the surrounding area is a hiking paradise. Even though some tracks may be closed, the guys are always nervous here.

We reached the Kirishima area from Kagoshima, as one of the first destinations of our three-month bicycle trip in Japan. If it’s true that the range is impressive, nevertheless, the road to reach it is worth the journey itself; here is the chronicle of our trip.

Check also
For hints and tips about traveling in Japan on a very tight budget (less than 10USD per day), read our guide here.
To have a panoramic view of our Japanese bicycle touring project, check our itinerary in this other article.
Here are 11 off-the-beaten-path destinations to visit in Japan

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At the bottom of the page, there’s a map of our ride from Kagoshima to Miyazaki. Click on the track to see the elevation profile.

Sakurajima to a Gloomy Waterfall – 54km

We wake up in a parking lot, still at the feet of Sakurajima, Kagoshima prefecture. The foot onsen is there for us to have a super-pleasant warm-feet breakfast! We met a Japanese cyclist from Osaka, Masahito, a super nice guy, and we’ll meet again in Osaka.

The coastal road is pretty flat. We try to take a bath, but the water here is greasy. On the other hand, we see a funny animal walking/crawling underwater at a fast pace. The volcano Sakurajima is majestic, on our left, covered with a cap of smoke.

Leaving the coastal road after 21km, we arrive at Kirishima-shi, the town, where we meet Daniel, an English teacher (and who would have thought?). His wife is Japanese and works at a hotel with a spa; for a moment, we hope for a lucky break, but unfortunately, there is no invitation. Anyway, he’s a cyclist who knows the area, his advice is to go along road 223, along the Amon-gawa river, we follow the advice, and he follows us.

The road is beautiful (km34), slowly climbing, the river always beside us, with some amazing pools where to swim and many small waterfalls. Although we are just 100msl, it seems to be in the Alps.

Pristine pine woods left and right. And hot springs everywhere, very cheap, some for less than 1 USD, but it’s still too hot to enjoy the Onsen. We stop to eat some eggs slowly boiled in thermal water, by the umpteenth free foot Onsen, where Daniel leaves us.

The climb gets a bit steeper, and we reach 300 msl at km 51. Time to find a place to sleep. We go down a steep road following the signs pointing to a waterfall and a Buddhist temple.

We find the waterfall (GPS 31.864066, 130.792223); you have to ford a river to get there. On the other side, in the woods, there are abandoned picnic areas. The atmosphere is a bit gloomy; we are surrounded by a forest of tall pines that suddenly becomes a forest of bamboo.

The trail to the waterfall is in a state of neglect, the waterfall is beautiful, about 30 meters, but we cannot sleep here, it would be complicated with bikes and there is no real place for the tent. A little further down the road, we set camp in a meadow near a rice field. There is a lot of moisture; the tent is all wet when we wake up.

Gloomy waterfall to Onami Lake – 16km

Back up the steep road to road 223. I push, and Daniele rides. Along the way, mosquitoes devour us. Back on the main road, the real uphill begins; it’s a 700-meter climb in 15km, not so hard really.

Just 6 km after our camping spot, there’s the village of Makizonocho Takachiho (I think), where there are the last convenience stores, a camping, and an information center where we meet a nice girl who gives us the usual unnecessary maps. Those are poorly made; it is not clear where the places are; too many comics (cute but not very useful); and, of course, in Japanese only.

The climb goes on, and a monkey tosses an acorn on my head. We cross an area full of abandoned hotels and onsen (hot springs). The windows are shattered, perhaps by the Shinmoedake’s eruption of 2011, when the volcano, waking after 52 years, exploded violently, damaging buildings up to 8 km away. Since then, the path to this crater has been closed; before, it was a beautiful lake in an extinct crater. Now is a lava lake.

Hiking Onami lake

At one point, on the left side of the road, we see smoke; there are pools of bubbling mud, Dante’s Inferno. There is a hot river, or rather, nearly boiling; we try to dip a finger, but it’s not possible. Large pipes collect some of this water to carry it to a nearby spa.

The landscape around us is burned; no life form seems to withstand this heat. The feeling of being on another planet overwhelms us, and we lose track of time. If you pass by this place, stop and have a look, it’s impressive.

We reach the trailhead to Onami Lake in the early afternoon. Onami-Ike is a lake in a volcanic crater, the highest in Japan at 1,412msl.

There’s a shelter where to take cover in case of an eruption, we leave the bikes there, where we plan to sleep tonight. On the move again, by foot up to the lake, we don’t have much time, so we rush a bit.

The trek takes around 40 minutes, more if you take it easy, begins with a series of paved steps, and quickly becomes rougher, anyway doable for almost everybody. When we finally reach the top, the view dazes us; the lake is stunning, surrounded by a sort of unnatural silence, even though it is the most natural thing there is.

Behind the pond lies Mt. Karakunidake, the highest peak at 1700 msl, majestic. We stay in awe for a while, we’re alone, us, the lake, and the volcanoes.

There is a trail that goes all around and even to Mt. Karakunidake, but we are tired, and it’s too late. We’ll climb the Karakuni tomorrow from another trail.

We get back to the shelter to set up your tent, the safest place around. As we go to fill up our water bottles at the bathroom on the other side of the road (there’s always a public toilet in Japan), two deer cross the road, one is a pup, and a nail in the middle of the road to look at us, maybe the first time he saw a human, he seemed really amazed.

Hiking Ebino Plateau and Mt. Karakuni in Kirishima

A couple of cars and a few old men laugh to see us sleeping in the shelter. Not much traffic up here. We eat spaghetti with things that I would rather not reveal, shame on us: quite a night, silence, sound sleep.

In the morning, we reach the Ebino Plateau, just 4 km of easy climbing along the road. We park the bike and begin hiking Karakunidake, about an hour’s walk.

We first meet the Io caldera (Ioyama), with its sulfur smell, in a red-and-white landscape. The climb is more challenging than the Onami’s, but needless to say, the view is stunning and epic.

From the top at 1700 msl, we can see the crater that erupted in 2011, Mt. Shimonoedake, Onami Lake, three more crater lakes, and even peek inside the dormant (for now) crater of Karakuni.

Thick smoke comes out from Shimonodake, brought here quickly with the wind, filling the crater near us in an unreal waterfall of steam.

In a few instants, we’re enveloped in a soupy mist, time to rush down the ridge, before being totally blinded. We leave with a longing for nighttime up here, maybe with a gentle wind, and there could be a chance to spot the lava lake inside the Shimonoedake.

Ebino Plateau to Miyazaki – 90km

Rain begins to fall, and we ride downhill for 24 km, from 1,200 to 200, meadows and hills, and then the forest again. We encounter no cars, maybe one. We cross the village of Ebino, famous for its hot springs, which are really everywhere here, in a countryside straight out of a Studio Ghibli movie: paddies and black soil and the volcano towering behind. Still downhill, still raining.

We stopped to eat late, at 4 pm, in Kobayashi; we did not find anything for lunch along the way. We take a road along the Iwase-Gawa river, northward for a few km, and put the tent under the roof of a shed in front of a factory, wrapped in ivy; it seems abandoned, but it is not, just dreamy, like everything else here. It rains all night, but we stay dry. We are happy.

The next day is a basically flat ride, for 60km, down to the coast and the city of Miyazaki, where we sleep in a Buddhist cemetery, and calm and peace pervade us.

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