Date of sighting: December 6, 2015
Location of sighting: El Alto, LA Paz, Bolivia
Normally I am a little skeptical about video footage that is 15 sec or less, because the chance is higher that it is fake. This however is taken further away than most fakes. Its to fast to be a blimp. As it moves behind the mountain, it lifts itself up and increases speed slightly as it becomes visible on the other side. Its long and cigar shaped, not disk shaped as it first appears. Also it has a wing on its left side. South America does have a higher rate of UFO sightings with clear and focused objects than the US, so this could be real. Amazing catch.
Scott C. Waring
UFOvni of Youtube states:
A witness clearly filmed a UFO QUALITY 1920x1080 [ ORIGINAL VIDEO AND SOUND ] The witness, Mario Prado filmed with your phone an amazing flying saucer from the window of his home, flying over the city of El Alto, La Paz, Bolivia. Metadata phone show the exact time. The UFO appeared behind a bush and after a slow progress, accelerated sharply in the opposite direction.