This is a conundrum.
At first glance these are footprints on the beach. At a second glance you discover the footprints are not pointing the same direction.
At first thought, I wonder how this happened?
Maybe a man with a peg leg twists his right foot, in the opposite direction, and lights a Cuban cigar as his Labrador Retriever plays in the surf? Maybe a couple with a devilish sense of humor indulge passions, before the sun is truly awake? Maybe Big Foot is on vacation in Mazatlan and is showing Little Foot how to confound humans?
On our last day in Mazatlan, this is fit for a call to Sherlock Holmes.
If anyone can figure it out, it will be him.