published by mapstore, this is a map showing all the protected areas in the greater metropolitan rio de janeiro.

published by the instituto estadual de ambiente - inea (rio's state institute for the environment), this map shows recent reforestation efforts in the state of rio de janeiro.

published by the instituto pereira passos, this is a high-resolution map of the tijuca florest, with a detailed list of all points of interest. 

published by the instituto terra brasil, an institute dedicated to the preservation of the environment, ecotourism, and education, publishes on this link a map of the caves in the tijuca florest.