Cave Sauna World

  • 20 persons
  • Underground Sauna
  • Hot water pool
  • Cold water pool
  • Fireplace
  • Seaview terrace

Kotka spa, this underground smoke sauna, heated pool and cold water pool are located near the sea.

Santalahti’s Cave Sauna & Nature Spa has a smoke sauna in a cave, a heated pool, cold water pool, changing room with a fireplace and a terrace. The arched caves open out towards the open sea to the south; therefore, the beautiful sea view can be admired from the heated pool while still under the arched ceiling.

The smoke sauna’s steam room, heated pool and fireplace room can each hold about 10 people. The recommended group size is no more than 20 people. For larger groups, it is a good idea to reserve the nearby Santa Glass Sauna and  2 VIP saunas, which can fit up to 60 people at one time.

The Cave Sauna is the perfect place for a small company event. It is located at the Santalahti Resort, only 5 kilometres from Kotka in Southern Finland. We can also provide catering services for your group, and you can bring your own alcoholic drinks.

The large Lappish Shelter, the Fireplace Cabinet and the (2- to 18-person) holiday cottages (228 beds in all) are located close to the Underground Sauna Spa.


  • 795 € / 4 hours + 22 € / person.
  • This price includes the value-added tax (VAT), as well as towels, sauna hats and toiletries.



A group of up to 60 people can bathe at the Santalahti Nature Spa at one time:
Cave smoke sauna, Santa Glass Sauna, 1-2 representative saunas according to group size, 2 warm water pools and cold water pool

1.195 € / 4 hours + 22 € / person. Possible additional hours 180 €
Prices incl. VAT 24%
Includes cave smoke sauna, Santa Glass Sauna, 2 warm water pools, cold water pool, dressing/fireplace room, toilet, towels, sauna hats, board towels, shampoo, hair conditioner and shower soap

The Cave Sauna & Nature Spa is in use throughout the year and can be rented Monday to Saturday 16.00–22.00.

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Online reservation

Children 0-14y


Saunas of Santalahti

Groups & meetings