Serra do Divisor National Park, Protected wilderness area at Brazil-Peru border in Acre state

Serra do Divisor National Park is a protected area along the Brazil-Peru border in Acre state, featuring forested mountains and hills.The terrain is crisscrossed by rivers and valleys, creating diverse habitats that support a wide range of wildlife throughout the region.

The area gained official protection status in 1989 to safeguard the natural ecosystems of western Brazil.This designation recognized the region as exceptionally valuable for preserving nature and the communities that depend on it.

About 1,200 families live within or at the edges of the park, most of them rubber tappers (seringueiros) who have collected latex for several generations. Falling rubber prices pushed some toward cattle ranching, timber cutting and commercial hunting. Plans call for moving most residents out, while those who stay may work in surveillance, maintenance and tourism.

The park is best reached by boat on the Moa or Jurua rivers, departing from the city of Cruzeiro do Sul.Visitors should prepare for long journeys and prefer the drier months when water levels are lower and conditions more stable.

A one-month rapid ecological assessment in 1991 recorded 485 bird species, 43 large mammals and 55 bat species; two bird species new to science were found. Seventeen mammals, four reptiles and twenty birds there are considered threatened or rare.