Pico das Agulhas Negras, Mountain summit in Mantiqueira Mountains, Brazil

Pico das Agulhas Negras is a summit in the Mantiqueira Mountains located within Itatiaia National Park and rises to 2,791 meters in elevation. The peak is defined by dark needle-like rock formations that stand out dramatically from the surrounding terrain.

Franklin Massena made the first attempt on the summit in 1856, followed by André Rebouças in 1878 and Horácio de Carvalho in 1898; all failed. Carlos Spierling and Osvaldo Leal reached the top in 1919. The peak was long taken to be Brazil's highest, a title lost to Pico da Bandeira and then, in 1965, to Pico da Neblina.

The name Agulhas Negras means "Black Needles" in Portuguese, after the sharp dark rocks at the top. The massif is called Itatiaia, Tupi for "stone with many sharp points", and mountaineers call the summit rock Itatiaiaçu, or Açu, from the Tupi suffix for "big".

The climb begins from the Abrigo Rebouças shelter at 2,350 meters elevation, accessible via a gravel road from the BR-354 highway. The route is demanding and requires solid physical fitness and mountaineering experience.

The access road to Itatiaia National Park's north entrance climbs to 2,460 metres, and a short spur to Eletrobras Furnas' communications tower reaches 2,662 metres — the highest points in Brazil reachable by ordinary car. The peak's summit rock is called Itatiaiaçu, or Açu, from the Tupi suffix for "big".