Significados de upright wall en inglés

From her perspective, he looked like he was defying gravity, walking like a large fly along an upright wall of grass.

It was like climbing an upright wall, Alan said, but the pain of going on was less than the despair of giving up.

Casting his dull-red illumination to the left, and lower down, he proceeded a little along the ledge, till it merged in an upright wall.

It is difficult to imagine an upright wall a thousand feet high with red the predominating color, and with brighter hues near the summit.

More rocks there are to climb, for the river again rushes between upright walls.

Think-Whilethe steam and stones are being blown out, the crater is an open funnel, with more or less upright walls inside.