During our trip to de the "Otun National Park" in Colombia, located 17 km of Pereira, we were walking flollowing the Otun river taking pictures of birds and trees.We made a short stop in a bridge searching for ducks, so I decided to took some picture of the river and vegetation.Two days after that, I was checking the pictures in my PC, then I saw the strange object in my picture.We never heard a sound or something anormal.Could be an UFO?