He said that he was out one day when he saw a doll floating in the canal and scooped it out, hanging it up on a tree near the drowning spot to make the girl eternally happy so she would not haunt and scare him.
He then became consumed with finding more and more dolls, fishing them out of the canal, sorting through trash bins, and even bartering until he had, over the decades, covered the island with dolls.
People believe that the dolls killed him. The island since then has become a thing of fear for locals and visitors. To some, it is considered the creepiest place in Mexico and to others, the entire world.
(Wikipedia) The "uncanny valley" hypothesis holds that when robots and other facsimiles of humans look and act almost like actual humans, it causes a response of revulsion among human observers. The "valley" in question is a dip in a proposed graph of the positivity of human reaction as a function of a robot's life-likeness. This hypothesis was created by a robot-maker, Masahiro Mori.
Basically, it is the point at which a person observing the creature or object in question sees something that is nearly human, but just enough off-kilter to seem eerie or disquieting.
Have you ever seen a wax museum figure of say, Princess Di, but there’s something just a little bit off about the proportions of expression that makes it just wrong.
About the island