Final answer:
The site of the famous battle in 480 B.C. known as "hot gates" is Thermopylae, where the Greeks, led by Spartan King Leonidas, heroically delayed the Persian forces commanded by King Xerxes.
Step-by-step explanation:
The mountain pass that was the site of the famous battle in 480 B.C. is Thermopylae. During this pivotal conflict, a coalition of Greek city-states, under the command of King Leonidas of Sparta, made a valiant stand against the much larger invading Persian army, led by King Xerxes. Although the Greeks were ultimately overwhelmed, largely due to a betrayal that revealed a hidden path to the Persians which allowed them to encircle the Greek forces, the bravery and sacrifice of the Spartans at Thermopylae became legendary. It provided inspiration for the Hellenic League and was instrumental in uniting the Greeks, which ultimately led to their victory in the Greco-Persian Wars.