You remember what the Grail tablet said, 'Across the desert and through the mountain to the Canyon of the Crescent Moon'.

9 seconds sound clip from the Indiana Jones and the Last Crusade movie soundboard.

You can hear this line at 00:41:37 in the Blu-ray version of the movie.

Quote context

[...]

- In that case, God be with you in your quest.

- Your father is being held in the Castle of Brunwald, on the Austrian-German border.

- How's the head?

- It's better, now I've seen this.

- It's the name of a city. Alexandretta?

- The knights of the First Crusade laid siege to the city of Alexandretta for over a year. The entire city was destroyed. The present city of Iskenderun is built on its ruins.

- You remember what the Grail tablet said, 'Across the desert and through the mountain to the Canyon of the Crescent Moon'.

- But where exactly?

- Your father would know.

- Your father did know. Look. He made a map.

- He must have pieced it together from clues scattered through the whole history of the Grail quest. A map with no names.

- Now, he knew there was a city with an oasis due east, here.

[...]