According to the locals' reports and the stories that were told, this stream originated in the Algarves Well, hence its name, which is a structure (cave) that exists north of this place.
It is said that this well dates back to the time of the Moors, who built it for their water needs.
The Well has several galleries, the longest of which is about 200 meters long.
It is the only place in the county where you can practice Speleology.