Because of the various flooded caves in the region, such as the Mysterious Lagoon, Anhumas Abyss, Mimoso Grotto, Buraco das Abelhas, among others, the region of Bonito and Jardim (Bodoquena Mountain Range) is considered a landmark in Brazil for cave diving and one of the best places for the development of this activity.
The Mysterious Lagoon, as can be seen in its underwater topographic map (right), is the perfect setting for technical diving.
At 8 meter deep two tunnels are open, with about 10 meters in diameter, that join again at the depth of 50 meters, forming a single canal that descends vertically over 220 meters deep.
The Mysterious Lagoon will offer the following types of technical diving:
| Credential |
Scuba guide |
Scuba equipment required |
Maximum Depth |
| Cavern Diver |
Mandatory |
Cavern Diver |
25 meters |
| Intro to Cave Diver |
Mandatory |
Intro to Cave Diver |
30 meters |
| Cave Diver e Normoxic Trimix Diver |
Mandatory |
Cave Diver e Normoxic Trimix Diver |
60 meters |
Dives are planned within the limits the certification of each diver, and will be accompanied by a local dive instructor that will oversee the entire operation.
Specific rules must be followed, such as:
- It is imperative that divers have DAN insurance within the validity period, with an insurance coverage related to the type of diving to be done.
- Dives below the depth of 30 meters should use helium gas in the mixture (with equivalent narcotic depth of 30 m).
- It is forbidden to enter the Mysterious Lagoon side slits, located between 20 and 30 meters.
Technical dives below 60 meters will be authorized upon request in advance and following all the technical recommendations of CECAV/ICMBio.