The lush forests of the 1128-sq-km (434-sq-mi) Sierra de la Laguna are rugged, remote and largely uninhabited, although they teem with animals and plants, many of them unique to the area. Adventurous and experienced hikers will have a field day here, but trails are often poorly marked. Consider hiring a guide or joining an organized group hike.
This is a Unesco biosphere reserve, wherein swathes of naturally significant land are fully protected within zonas núcleo (core areas) but locals are allowed to work certain surrounding areas using sustainable methods.