What it looked like was an enormous, very dark blue plain. There were no hills to be seen, but there were biggish white things moving slowly across it. “Those must be clouds,” she thought. “But far bigger than the ones we saw from the cliff. I suppose they‘re bigger because they’re nearer. I must be getting lower. Bother this sun.”
The sun which had been high overhead when she began her journey was now getting in her eyes. This meant that it was getting lower, ahead of her. Scrubb was quite right in saying that Jill (I don‘t know about girls in general) didn’t think much about points of the compass. Otherwise she would have known, when the sun began getting in her eyes, that she was travelling pretty nearly due west.