This picture is a composition of 6 photographs stitched together using Photoshop. It was taken at Aparados da Serra National Park in southern Brazil. This is Itaimbezinho Canyon, which is 6km (3.8mi) long and up to 700m (2000ft) deep. It defines the state border between Rio Grande do Sul and Santa Catarina. The name Itaimbezinho comes from the indian language Tupi-Guarani and translates to "sharp rock".
Due to the high amount of vegetation it's really hard to get closer to the border. The weather is also very unpredictable: in just 5 minutes the entire scenery can go from a blue sky to the most dense fog I've ever seen!
Hope you enjoy!