These people are not in danger. What is coming down from the left is just the Moon, far in the distance. Luna appears so large here because she is being photographed through a telescopic lens. What is moving is mostly the Earth, whose spin causes the Moon to slowly disappear behind Mount Teide, a volcano in the Canary Islands of Spain off the northwest coast of Africa. The people pictured are 16 kilometers away and many are facing the camera because they are watching the Sun rise behind the photographer. It is not a coincidence that a full moon sets just when the Sun rises because the Sun is always on the opposite side of the sky from a full moon. The featured video was made in 2018 during a full Milk Moon. The video is not time-lapse -- this was really how fast the Moon was setting.