spreading from the avenida das américas (americas avenue) all the way to the restinga da marambaia, these fields were considered a protected area in 1974, officially the 'reserva biológica e arquelógica de guaratiba', or 'biological and archeological reserve of guaratiba'.

this was initiative aimed at the preservation of the local wildlife but, even so, other uses were found for the general region.

close to suruquai is the 'centro tecnológico do exército', in english 'army's technological center', used to test and develop equipment for the brazilian army.