The climbers had to negotiate a steep rock face.

攀登者必须攀越陡峭的岩壁。

《牛津词典》

I looked to the river gorge falling 100 feet below on our left and the steep rock face to the right.

在我们左边是深达100英尺的河谷，右边是壁立的悬崖。

youdao

Case studies show that the mechanical mechanism for the retreat evolution of steep rock slopes is consistent with the actual one.

实例分析表明，建立的岩质陡坡后退力学分析方法与实际情况基本一致。

youdao

Visitors who are not experienced rock climbers can follow a steep man-made path that takes them to the top.

VOA: special.2009.07.20

After negotiating their way down a series of steps carved into the steep rock face, explorers of the Blue Lake Grotto are faced with a deceptively deep pool of limpid blue-green water.

BBC: Livin�� la vida Bonito

Though the camp was less than 2 miles away, getting there involved hiking up more than 2, 000 feet while traversing a jumble of steep rock and ice chutes, all of which required careful handwork.

WSJ: Man Versus the Volcano

Hidden in the jungle for more than a thousand years and only accessible by a 44km trek through inhospitable terrain, visiting Ciudad Perdida gives travellers the chance to live out their Indiana Jones fantasies as they battle rock scrambles, steep ascents and numerous waterfalls along the way.

BBC: Trekking to Colombia��s Lost City