Yudster wrote:Didn't they find it?
They did indeed....
Episode 37 "The City of Gold" January 22, 1983
Esteban and Zia swim to an island in the middle of the lake. They are found by a mysterious high priest with a golden mask who claims that prophecy foretold of their coming, for they bear the medallions of the sun – the keys to the Cities of Gold. Soon the Olmecs arrive and threaten to kill Tao if not permitted into the cities. The priest tells the children it is up to them to decide to fate of the cities, and explains that the cities were built underground to safeguard the knowledge of the Hiva, for a war was waged thousands of years ago between them and the people of Atlantis. Both cultures built great utopias powered by the sun, but for reasons long forgotten they went to war and destroyed each other with powerful solar weapons. Kalmec claims the secrets of the cities are needed to save his people, but Esteban decides to open the gates to save Tao's life. He and Zia place their medallions on the doors which swing open finally revealing a massive City of Gold.
Episode 38 "The Great Legacy" January 29, 1983
With the gates open, Menator has his flying machine split apart into separate sections – the claws pry the gates wider, while the top drills a hole into them. When a gap is opened, Mendoza rushes inside and captures Kalmec setting Tao free, but once the gates are destroyed, Menator's machine flies in and reforms itself. Kalmec slips away and runs to find the treasure in the temple, but is stopped by the priest who knows Kalmec wants the solar unit that powers the city. He offers it willingly only if Kalmec stands down. Kalmec lowers his saber, but when the priest gets close he stabs him, claiming the Olmecs take what they want. Kalmec finds the solar unit and notices a component that resembles Tao's golden jar is missing. When Kalmec removes the unit he sets off a security system that opens the dome over the city. A ring of solar panels is deployed that focus heat beams from the temple onto the Olmec machine and destroys it. Menator survives however, and he and Kalmec flee with the solar unit. Esteban and his friends help the wounded priest.
Episode 39 "End of the City of Gold" February 5, 1983
Kalmec helps his leader back to the Olmec base and with the solar unit in hand, he connects it to the Olmec solar reactor and powers it up. Something goes wrong, however, and a meltdown begins. Earthquakes shake the City of Gold, and the high priest warns that the Olmec's reactor must be shut down or it will burn a hole straight into the Earth. To stop it, Tao's golden jar must be inserted into the device. The children go off with the priest to the mountain, but in the meantime Mendoza learns the priest is an impostor and the real one died years ago. Instead, the masked man was a traveler who came from the sea, and he realizes the man is Esteban's father. Reaching the mountain, the priest continues on alone after bidding Esteban goodbye. As the City of Gold crumbles, Gomez and Gaspard are killed trying to horde gold. Elsewhere, the priest finds the reactor and inserts the jar. In a flash of energy the machine stops but the priest's fate is uncertain. In the end, the City of Gold is destroyed, but the children still have the Golden Condor. Esteban, Zia and Tao decide to fly west to find adventure in the Pacific Ocean. In the meantime, Mendoza promises to see Esteban again – perhaps one day in the Barcelona tavern where they first met.