as a result visitation to these areas is closely monitored, with rules to regulate the flow of people in and out.

one of the rarer conservation units, there are not a huge number of aire's in the rio de janeiro area, whilst some of those that are located within the state are completely private, not accessible for visits.

one example if the floresta da cicuta, which was once state property but that is now privately owned - yet with some of the most stunning species in the entire state.