Surefooted, they leap easily from rock to rock and climb seemingly sheer cliffs.
His travels have taken him to the tallest freestanding sandstone towers in the world, the Hand of Fatima in Mali, to the highest sheer cliff face on the globe.
The mountain path is rough and rugged. On one side is a sheer cliff.
It's very difficult to climb a sheer cliff.
With its plunging sinkholes, layered city levels and sheer cliff-faces, the remote world of Utapau can be difficult and hazardous to navigate.
My friend had grown up by the sea so I knew I could rely on him. He pointed towards a sheer cliff near the channel mouth. "Someone lives over there."
From Kabul, Mrs. Bush flew to Bamiyan province to see where two enormous sandstone Buddhas, carved out of a sheer cliff, stood for centuries until they were blown up by the Taliban in 2001.