Journey to the Center of the Earth season 1 episode 4
Episode title: Labyrinth: Separation
Diego and Pola manage to save everyone from a giant spider, but just when everything seemed to be going well... the cave floods and the currents break the group apart! Ana and Laura will have to survive quicksand; Diego, Violeta, and Pedro will feel claustrophobic; and Pola and Pompilio will have to deal with a toxic river. Martin discovers that Pompilio is a descendant of Gaspar Nadar.
