Guanacaste National Park, located on the east side of the Interamerican Highway across from Santa Rosa National Park, was created in 1989 to protect the volcano slope evergreen forest and the Orosi and Cacao volcanoes’ cloud forests. This project was founded to help secure a migration route for those animals that move into the highlands during the dry season. The park contains several interesting trails and four research stations. The most common mammals found are howler monkeys, white-faced capuchins, long-nosed armadillos and coatis. There are also collared peccaries, pocket mice, white-tailed deer and pumas.