Her stern look told the boys that they were in trouble.

They climbed the rugged north face.

He stared at the steep slope of the mountain and stopped climbing it.

He stared at the steep slope.

We climbed the steep slope.

The higher we climbed, the steeper became the mountain.

To climb steep hills requires a slow pace at first.

The steep path is the sole access to the border.

The steep path is the sole access to the border.

From this point the climb became suddenly steep.