La aventura de la vida, parte 4

Sandra and Gabriel have fallen through the floor of the grand pyramid of Chichen Itzá, El Castillo. After solving puzzles and more falling through the pyramids below El Castillo, they have found themselves in a cenote, or underground lake. How will they make it out of this situation before the evil men chasing them catch up? Does Sandra know anything that can help them? This story is in the third person and present tense, with other verb forms used as needed to tell the story. Importa...