Alien face found in ancient cave on island in Puerto Rico, Oct 2017, UFO Sighting News.

Date of discovery: Oct 2017
Location of discovery: Puerto Rico, island of Mona
News source: http://www.newsweek.com/puerto-rico-mona-island-cave-art-early-humans-civilization-696239

This face was found in an ancient cave on a tiny island of Mona at Puerto Rico. The large circle at the center shows an alien face, probably a tall grey, similar to the type of alien in Fire in the Sky incident. If you look at the screenshot below from the movie, which shows what Travis Walton saw when he was abducted, then you will see the straight emotionless mouth matches the drawing above, and so does the shape of its face and its eyes. Next to the circle I circled another face, it looks human but the eyes are warn away, however the chin, jaw, mouth, nose and hair remain. Absolute proof that humans and aliens both explored this cave back in the 800-1,500 years ago, and sometimes they left a drawing, and obviously, either a person who has seen this ET, but I believe that the alien itself noticed the cave, entered, explored, and noticed the drawings, so it drew its own face on the wall to be included with the human drawings. Teamwork you might say. 
Scott C. Waring