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Together with the National Park José del Carmen Ramírez, the two parks were established in February 1956. A highly elevated area, it is notable for cold and cool temperatures during most of the year (from −9 °C [16 °F] to 15 °C [59 °F]), despite being in a tropical country.
- Hispaniolan pine (Pinus occidentalis) — endemic to Hispaniola.
- Pale magnolia (Magnolia pallescens) — tree endemic to Hispaniola, IUCN Red List endangered species.
- West Indian mahogany (Swietenia mahagoni) — endemic to the Caribbean and southern Florida.
- Dominican butterfly bush (Buddleja domingensis) (syn. Buddleja calcicola) — endemic to Hispaniola.