The history of Penedo can be found in Francisco Alberto Sales's book Arruando para o Forte.

Loukotka (1968) reported that the remaining ethnic descendants who speak only Portuguese could be found in the city of Porto Real do Colégio.

Some of these include: The Casa do Penedo, built in 1974, has as its objective the preservation of the city's artistic and cultural patrimony.

In the Casa do Penedo one can find a rich quantity of five centuries of creativity by residents of the São Francisco River Valley.

The ship stays longer than expected when she gets stuck in the river due to its rapidly changing tides.