Answer:
Cierto/ True.
Step-by-step explanation:
The lagoon is located on a volcano crater and its waters are of color green as an emerald because of the sulfur and other gas coming from the volcano.
According to the legend, on the center of it, there is a mermaid that comes out at night and enchant young and handsome men driving them to the bottom of the lagoon and killing them.
I hope this answer helps you.