The dad of a friend told me this story:
He and his cousin were 8 or 7 years old, they were walking through the woods near their house when they saw a dwarf walking around he describe "just like the ones in snowhite, whit their hats and clothe" he kept satring at them and for some reason they though it was a good idea to throw rocks at him, but he started to run just to stop again and stare at them again, everytime they got closer to range the dwarf laughed at them and ran further, they kept doing that for some time until the dwarf got through a river and stood on the other side of it, that time the dwarf kept making a sign with his hand and saying "vengan, vengan (its spanish for: come here, come here)" they kept throwing rocks but he was out of reach, it was getting late and they were tired so decided to go back home and the dwarf just ran into the forest on the other side of the river. When they got home they told the story to their grandmother who started to yell at them the reason the grandmother was so hysterical was beacuse that river was well known beacuse a lot of kids had died there.
A few years later an aunt of him were walking along with them when suddenly she just driffted away and started to walk into the woods, his mother started talking to her but she didnt respond until she catch up with her and shook her and asked her what was wrong with her and she replied "beacuse that little man was calling me, didnt you see him? it was so funny looking and he kept calling me" his mother just called her crazy and kept walking.
(english is not my first lenguage so excuse me if i have some mistakes)