Serra das Andorinhas, Mountain in São Geraldo do Araguaia, Pará, Brazil

Serra das Andorinhas is a mountain in São Geraldo do Araguaia municipality, Pará, Brazil, rising 559 metres above sea level, about 50 metres above the surrounding terrain, with a base roughly 1.3 kilometres wide. It lies about 1,100 kilometres north of Brasília, in a landscape of hills to the west and flatter ground to the east.

The area has been inhabited since ancient times, as shown by archaeological finds in its caves including cave paintings and pottery. These traces point to early cultures that used and settled this rock landscape.

Local people pass down stories and beliefs tied to this place, especially the tale of the legendary Martírios gold mines that still shapes how communities understand their land.

The area is accessible via marked trails that lead to various caves and rock formations. Visitors should bring plenty of water and wear sturdy shoes, as paths are uneven and sometimes steep.

The area is a nesting ground for many bird species that breed in the rock crevices and caves, which inspired the region's name. The name refers to the swallows that are especially present here and shape the landscape's character.