Final answer:
The excavation of ancient Troy is an example of an archaeological site that has yielded evidence supporting the truth behind a myth.
Step-by-step explanation:
One example of an archaeological site that has yielded evidence supporting the truth behind a myth is the excavation of ancient Troy. Heinrich Schliemann, an amateur archaeologist, used the texts of Homer's tales as a guide and discovered the site of ancient Troy in 1876. His findings, including rich treasure at Mycenae, confirmed that there was indeed a historical basis for the stories told in the Iliad and the Odyssey.