Onsen

Takamagahara Onsen

OnsenOvernight StayDay Trip

Takamagahara Onsen

Name: Takamagahara Onsen
Address: 富山県, JP
Price range: ¥300

Chubu Toyama

Hot Spring Overview

Kōtengahara Onsen is a hot spring situated at about 2,100 m elevation in Kurobedaniwari, Arimine, Toyama City—north of the Kōtengahara Wetland at the foot of Mt. Suishō in the Northern Alps. Nicknamed “Japan’s most remote onsen,” its name conjures a mythic realm, inspired by the breathtaking scenery.

The spring is a simple sulfur spring (hydrogen sulfide type), and its milky-blue water is opaque and beautiful. There are three open‐air baths—men’s, women’s, and mixed—and the water temperature is around 42 °C. Guests staying at Kōtengahara Sansō may bathe free of charge; day‐trippers pay ¥300.

About Secluded Rating

Total Score

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Access

Scenery

Value

Called “Japan’s most distant onsen” for its extremely challenging access (1 night/2 days for veterans, 3 nights/4 days for most), at an altitude of about 2,100 m and reachable only by mountaineering, it perfectly meets a Level 5 secrecy rating. Immersed in the grandeur of the Northern Alps and under a canopy of stars, it offers an adventure unlike any other.

Hot Spring Details

Quality	Sulfur Spring View this onsen's water quality rankingSulfur Spring
Temp	---℃ ～ 51℃
Supply	Natural Source Flow
Filter	Not Filtered
pH	pH 6.2 0714 AcidicNeutralAlkaline

Water Quality

Sulfur Spring

View this onsen's water quality rankingSulfur Spring

Temperature

---℃ to 51℃

Supply

Natural Source Flow

Filtration

Not Filtered

pH Level

pH 6.2

01234567891011121314

AcidicNeutralAlkaline

Practical Info

Stay

Day Trip

Fee

Adult 300JPY/Child ---JPY

Hours

	Mon	Tue	Wed	Thu	Fri	Sat	Sun	Hol
00:00 - 24:00	◯	◯	◯	◯	◯	◯	◯	◯

Stay/Day Trip

Stay

Accommodation

OK◯

Day Trip

Day Use

OK◯

Admission Fee

Adult300JPY

Child---JPY

Business Hours

	Mon	Tue	Wed	Thu	Fri	Sat	Sun	Hol
00:00 - 24:00	◯	◯	◯	◯	◯	◯	◯	◯

Booking

Official

Book Now

Visitor Reviews

Bath Types

Open-air Bath

Facilities

Sauna

Open-air Bath

Private Bath

Family Bath

Restaurant

Rest Area

Massage

Towel Rental

Locker

Parking

Wi-Fi

Credit Card

Mixed Bathing

Access Information

From Toyama Chihō Railway’s Arimine-guchi Station, take the summer‐season bus to Oritate (about 1 hour). Even from this nearest trailhead, it’s roughly a 13-hour trek. The only way to reach the onsen is on foot: from Toyama Prefecture’s Oritate trailhead via Tarōdaira Hut and Yakushisawa Hut, or from Gifu Prefecture’s Shin-Hotaka Onsen via Kagami-daira Mountain Hut and Suga-rokugoya Hut. Even experienced hikers need 1 night and 2 days; for most, it’s a 3-night, 4-day expedition.