Its colouring allows it to blend in with river stones.

May lay in two feet of water with a huge river stone on top of her chest.

I hadn't even thought of saying anything, and was surprised to feel the words in my mouth, cool and round as river stones.

"Shut up," he said, his eyes hard as flat river stones.

Visitors over the years built up four pools out of river stones.

Then she stuck hot river stones between my toes.

Off to one side, several acres of small white river stones marked the graveyard.

'Then how did you know it was a river stone that killed him?'

The corridor was filled with river stones and soil.

I see it drip in bright spatters on the river stones.