Fox gently nudged Edward forward; he kept his hand there as pressure to keep moving, and they gradually made their way across the desert.

The wind abruptly died down and Fox felt the temperature drop.

“The sun’s gone,” Edward muttered.

Then, a short while later, Edward said, “Here they are,” just as Ada’s proximity alarm dinged softly to let Fox know he was about to walk into something solid. He moved forward slowly, hands outstretched. His fingers grazed a hard surface in front of him. He pressed his hand against the cool stone. Limestone. Patches of it were rough, others worn smooth, and it seemed to curve inward into a natural sort of lean-to. Sandstorms like this one had likely eroded it over hundreds of years; fortunately the wind was blowing from its opposing side this time. But that wouldn’t matter much when the storm descended on them in earnest.

- RWBY: After the Fall, Chapter 10