Lamune Onsen

ラムネ温泉館ラムネおんせんかん

Other
Kyushu & Okinawa·Oita

Day Use

Yes

Bathing & Water

Outdoor BathYes

Open-air outdoor bath

OnsenYes

Uses natural hot spring water

Policies & Services

WashingYes

Shower, wash stations, soap and shampoo provided

ラムネ温泉

Ramune Spring

Operated by · 有限会社ラムネ温泉倶楽部

Sampled at wellhead
Bicarbonate
+ 含二酸化炭素 · Bicarbonate
Classification

Magnesium-Sodium Bicarbonate spring

A rare carbonated spring that earns its name — fine bubbles cling to the skin the moment you enter. The wellhead is a cool 31.5 °C and free CO2 reaches 1,400 mg/kg, so bathers stay in long while the carbonation tingles. The base chemistry is a magnesium-sodium bicarbonate water, neutral pH and lightly mineralized, with a generous 172 mg/kg of metasilicic acid adding softness to the skin feel.

pH
6.10
Neutral
Source temperature
31.5°C
Low temp.
Tonicity
2.21g/kg
Hypotonic
Free CO₂
1400mg/kg
Very high
Color
colorless and clear
Taste
strongly carbonated, moderately metallic
Odor
nearly odorless
Highlights
  • CO₂-rich
  • High silica

Analyzed Nov 12, 2018·公益社団法人大分県薬剤師会 検査センター·Cert no. 大薬検 第 7R-30110004号

Highlights

Drinking Spring
Lukewarm Bath

Programs

Loading map…

SM
Sergey M
1 year ago

425. Lamune Onsen, Taketa, Oita (Nagayu Onsen) Onsen for 500. Private bath available for 2,000 (didn't take it). Operating hours stated as 10:00 to 22:00. They stamp the 88 Onsen of Kyushu book. Bath photos from the internet match reality. Inside there's a three-level bath. Cloudy white-pale-green water, temperature 38-39. Breathing inside is excellent. When I got in, two old men were sleeping in the baths. After sitting down, within 3-4 minutes I started getting extremely drowsy and nearly face-planted into the water. I don't know if it was a coincidence or if there's really some combination of factors that's this relaxing at this onsen. Outdoor bath with clear carbonated water, cool temperature. An unusual place in terms of decor, the wildlife inside, and the baths themselves. If you're in the area or rushing the 88 Onsen of Kyushu achievement, recommended to stop by.