Costa Rica has plenty of volcanoes, including Rincon de la Vieja National Park, where there are natural bubbling mud holes called fumaroles. This sauna is naturally heated by extremely hot bubbling springs underneath.

Rincon is also known for its therapeutic mud. The good news? we no longer have any toxins left. Bad news? I had to buy a new swimsuit, this one was a wreck by the time Mike was finished!

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