1
A commotion followed in the mud; a dark knob appeared above water.
2
Only some dark peak, some dark knob became visible looming up out of the shimmering waste.
3
Well for Joe's mother that her hand was ready to grasp the dark knob and turn it when the time came.
4
Far ahead was a dark knob like the jut of a barren rock mesa, its top peeking above the trees on a tall hill.
5
He looked up to see a number of low, white and dark knobs upon the high point of lava.