That's our key position. It's on the wrong side of the river, but it's the only hiding place within feasible distance.

8 seconds sound clip from the The Bridge on the River Kwai movie soundboard.

You can hear this line at 02:05:11.226 in the Blu-ray version of the movie.

Quote context

[...]

- Since we don't know what time it's going to cross tomorrow morning we'll have to do the job manually.

- We'll set the charges against the piles about three feet under the water, I should think, and run the main wire downstream to the plunger.

- The problem is where to hide it.

- Our side of the river is quite obviously used by the Japanese. They'd spot it at once.

- Look. Do you see those fallen tree trunks? And the grey rock just below them on that little beach?

- Yes, sir, I see them.

- That's our key position. It's on the wrong side of the river, but it's the only hiding place within feasible distance.

- As soon as the bridge goes up whoever's there will have to swim back.

- It's not likely to be a pleasant swim.

- Sir, I was the best swimmer in my course.

- Yeah. Well, it looks like your line of country, then.

- Thank you, sir.

[...]