while none of them specifically arrange climbs on morro do macaco, they would be the best contact to start looking into it and getting the proper permits.

located in niterói, parque estadual da serra da tiririca, has an eco-team on location, and can be contacted via this link or by phone at 21.2709.9176.

trilhas do rio de janeiro is an organization of professional hiking and climbing guides - it can be contacted via form on this link, or via telephone at 21 3884.0311, also the organization provides a list of all hikes here.