The horizon dipped to the left, the right wing turning toward the earth.

The horizon dipped as the nose of the plane assumed a sharp angle that would bring it above the level of the unknown.

The horizon dipped down, the planet became a sphere, the sky turned black.

The horizon dipped below the wingtip and straightened again, and there was a chorus of yells as they beheld land.

It drained away as the wave lifted the little ship crazily toward the sky, and the horizon dipped and rolled around us.

The green-limned horizon was dipping.

Then the horizon dipped below the Cub's nose again and Martinson was climbing out of the valley.