perhaps it is obvious advice, but for anyone who suffers from claustrophobia, it may be best to avoid spelunking in this cave and others.

with the increase interest in rio de janeiro's caves and geotourism, some companies have begun to offer guided tours of these very special areas.

following, we list some tour operatorsthat specialize in taking visitors in the area.   these contacts are provided as courtesy only, and visitors who intend to use these services should check for safety records, backgroud, and certifications of individual guides.