And Thermopylae, you're in this coastal area where there's a very limited area for this massive Persian army to be funneled through. And the Greeks are trying to stop them at the pass of Thermopylae. And you can see this, you can see that right over there. And by Herodotus' accounts, they are actually quite successful of because they're funneling that Persian army into a very narrow space, the Spartans along with the other Greeks are able to push back. And this is a massive outnumbering, roughly 7,000 versus many tens or hundreds of thousands. But as Herodotus' accounts go, there was a traitor amongst the Greeks who go to the Persians and show them another way around. And show them another way around.