By next May, the sand pile, once a veritable mountain stretching hundreds of yards in every direction, will be gone.

One day she visited Savatthi and again erected her sand pile.

Eating it was like trying to pick up a pearl on a sand pile.

They played on a sand pile and were often noisy and seldom clean.

You go across the street to that other lot and use the sand pile and cover it up.

She wasn't due to make another correction for three minutes, and floating in a sand pile was getting a bit boring.

Using the ruler, create a straight line from the peak of the sand pile down the slope.

They will raise surprising crops of vegetables on a sand pile.

"You go home now, Bobby, and play in the sand pile."

Per Bak and his colleagues in published a paper concerned with sand piles.