Some peaks and ridges face each other and form deep cliffs and gullies.

有的峰岭夹峙峡谷自然形成了陡壁深壑。

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The valleys are thickly forested, but the upper slopes become open woodland and many of the peaks and ridges are treeless.

山谷被茂密的森林覆盖，但上层的斜坡上是比较开阔的树木林地，并且很多山顶和山脊上都是没有树木的。

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Following the West Valley, we climbed more peaks and ridges, passed through the fragrant apple orchard, and lingered for a while by Black Dragon Pool.

我们沿着西溪，翻山越岭，穿过果香扑鼻的苹果园，在黑龙潭附近待了老半天。

youdao

Set in a monumental amphitheatre of peaks, ridges and jagged stone bluffs, it's far more rugged than the sweeping farmlands at Appenzell.

BBC: Swiss movement

Others are so large that their ridges and peaks tangle with those of the mainland itself to produce an ambiguity of land and sea.

BBC: Sailing in Croatia

The road petered out in an area with little valleys, ridges, hills, and peaks, but it was not the contours of the land that created the uneven surface but, rather, the layers of things that had been thrown away: everything that the consumerist city had used up and expelled so that it could immediately enjoy the pleasure of handling new things had ended up in this unprepossessing neighborhood.

NEWYORKER: The Daughters of the Moon