Buraco das Araras (Goiás)

Buraco das Araras (GO-016) (English: Hole of the Macaws) is one of the largest quartzitic caves located in the State of Goiás, Brazil. It is located about 120 km west of Brasília and 16 km from the district of Bezerra, in the municipality of Formosa. It is considered one of the largest sinkholes (dolinas) in the world.

Description
Discovered in 1912, it is believed that the hole has been formed by the collapse of the roof of a cave. The cave itself is 105 m deep and 295 m wide, having in its midst a dense rainforest with gigantic ferns typical of a primitive age.

Getting there
To reach it the traveler must travel 41 km from Formosa, following BR-20 north as far as the village of Bezerra. Four kilometers after the settlement, one should turn left and drive on a dirt road for 7 km and then turn left for two more kilometers.