Mysterious Lagoon

The Mysterious Lagoon is located 46 km from Bonito, Mato Grosso do Sul, and features a 600-meter trail to the observation deck and the access staircase (with 186 steps), a descent down the staircase, a view of the lagoon, and a circular swim in the lagoon, considered the fifth-deepest cave in the country. Due to weather conditions, the activity is suspended between September and April because of microalgae blooms.

Highlights

• ✅ Snorkeling in crystal-clear waters

• ✅ One of the deepest caves in Brazil

• ✅ Hiking trails and a scenic overlook

Additional Information

Duration: Half-day; can be combined on the same day with a float on the Rio da Prata or a visit to Buraco das Araras (both are nearby).

Minimum age: 5 years old.

Distance: 46 km.

The use of sunscreen, insect repellent, and tanning lotions is prohibited.

Ankle-strap shoes with non-slip soles

(sneakers, tennis shoes, or low-cut boots) are required for the trail and staircase.

Restrictions: Pregnant women past 24 weeks, heart conditions, recent surgeries, epilepsy, labyrinthitis, history of stroke, asthma, severe allergies, and/or history of anaphylactic shock.

Valid through 12/31/26.