Under here is a way in.

4 seconds sound clip from the Conan the Destroyer movie soundboard.

You can hear this line at 00:33:54 in the DVD version of the movie.

Quote context

[...]

- Into the boat!

- Somebody should stay and watch the horses. I didn't mean me!

- I'm rowing!

- Too late, my friends. But come. Come anyway.

- How do we get in? Is there another entrance?

- Under here is a way in.

- You mean under the water?

- You can stay here if you like.

- Alone?

- They need me!

[...]