Final answer:
Poseidon's specific location during Athena's appeal to Zeus is not traditionally specified, but he would be present at the council on Mount Olympus or in his domain, the sea. He competed with Athena to become the patron deity of Athens, offering a saltwater spring, but the Athenians chose Athena's olive tree, symbolizing peace and prosperity.
Step-by-step explanation:
The question asks about the location of Poseidon during Athena's appeal to Zeus on Mt. Olympus. In Greek mythology, Mt. Olympus is the home of the twelve Olympian gods, including both Athena and Poseidon. While the specific location of Poseidon during Athena's appeal is not detailed in well-known myths, Poseidon typically resides in his watery domain, the sea. However, when the gods assembled, like in council or when they were called by Zeus, Poseidon would be present on Mount Olympus with the other deities.
The myth of Athena and Poseidon vying for the patronage of the city of Athens presents these gods offering gifts to the Athenians. Poseidon offered the saltwater spring by striking a rock with his trident, symbolizing naval superiority. In contrast, Athena provided an olive tree, signifying peace and prosperity. The Athenians favored Athena's gift, and she became the patron deity of the city.
The contest between the two gods is represented symbolically on the Acropolis, where visitors could see the marks from Poseidon's trident and the olive tree offered by Athena. This contest and the favor of Athena are significant parts of the city's mythology and history.