Forested volcanic landscape of the Carpathians with natural gas springs, stylised view
Remedy CO₂ dry gas

Mofettes

Natural post-volcanic CO₂ dry-gas baths — you stand in the gas and so stimulate the circulation.

01What is a mofette?

A mofette is a natural post-volcanic dry-gas bath. Pure carbon dioxide (CO₂) escapes from the ground — an echo of the former volcanism of the Eastern Carpathians. The key difference from a thermal bath: the guest does not bathe in water but stands, clothed, in the gas. The CO₂ is heavier than air and collects in a basin or room, so that it surrounds the legs and lower body.

The gas is absorbed through the skin. Mofettes are a speciality of the Carpathian arc and are especially widespread in Romania in the Covasna region.

02Effect & application

The CO₂ dry-gas bath is traditionally recommended for:

  • Peripheral circulation — CO₂ widens the small blood vessels and stimulates circulation.
  • Cardiovascular system — traditionally used to support circulatory disorders.
  • Absorption through the skin — no strain from wet bathing, well suited to rehabilitation stays.
  • Application — short stays in the gas basin, always after medical clearance and under supervision.

03For which conditions?

Mofettes are used above all for cardiovascular and circulatory complaints:

Note: Because mofettes act directly on the cardiovascular system, their use must be cleared with a doctor beforehand and carried out only under professional supervision.

04Where in Romania?

The mofette spas lie within the Carpathian arc. Each of these places has its own Terra Cura page — here are the most important ones:

Covasna

Covasna County

Covasna

Known as the "spa of the 1,000 springs" — the centre of Romanian mofette therapy.

Băile Tușnad

Harghita County

Băile Tușnad

A small Carpathian spa with mineral springs and mofettes.

Balvanyos

Covasna County

Balvanyos

A forest spa with post-volcanic gas emissions and mofettes.

05FAQ

Do you bathe in water in a mofette?
No. A mofette is a dry-gas bath: the guest stands, clothed, in a basin filled with natural CO₂. The gas is heavier than air and collects at the bottom; the CO₂ is absorbed through the skin.
Is a mofette suitable for everyone?
Mofettes act on the cardiovascular system and should therefore be cleared with a doctor before use. Because of the suffocation risk posed by the heavy CO₂, they may only be used under supervision and in accordance with the facility's rules.

Discover the spas of the Carpathian arc

Mofettes, mineral springs and mountain air — find the healing spa that suits you in Romania.

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