Another 'trouble' with the Grand Canyon is how a horizon shot has everything line up on that 'horizon'.

This one does allow a look down at the ground under your feet to show that curving lookout area. The right hand section of rocks below the horizon line has been seriously doctored.

Clues that this is a joiner can be found in other smaller details though one of the big giveaways is...well, figure that out for yourself.