"dirt pile" is correct and usable in written English.
You can use it to describe a pile of dirt, such as soil, that has gathered in a particular area. For example: "The children were playing in the dirt pile behind the shed."
I love to watch the dirt pile up, the dust pile up.
In October, Curiosity visited the dirt pile — a stationary Martian dune piled up by gale-force winds 50,000 to 200,000 years old — and performed the first soil test in its chemistry laboratory, which is packed into a space the size of a microwave oven.
But as we inched into the continent's interior, stopping whenever some outcrop or dirt pile caught my father's eye, I realized I could be wealthier than I had ever imagined — if I availed myself of the skulls still firmly rooted in their carcasses.
His choice was not so much a hidden gem as a hidden dirt pile: the forest floor diorama, which magnifies the layers of dirt and leaves and bugs on a forest floor by about 24 times to display the complex processes that take place down there, most notably decomposition.
And the Opportunity rover, which has just celebrated 10 working years on the planet, very nearly went the same way in 2005 when it became stuck for several weeks in a deep dirt pile later dubbed "Purgatory Dune".
The bomb-disposal guys come later, drive their little robot out to the dirt pile and sit an explosive charge next to the bomb.
The pitcher's mound is dirt piled over an old automobile tire.
"It's a big hole with dirt piled all around it and when it rains, all you have is mud," said Brian Barrett, 64, of Bedford Hills, whose pool was built last fall by Bedford Poolscapes in Bedford.
The houses have been dug out by hand, and the dirt piled in mounds on the roadway.Only 20% of the town has been cleaned up, estimates Olivier Le Guillou of Action Contre la Faim, a French charity, which has paid 1,800 residents to help do the job.
But Brown said Tuesday's site visit supported the utility's "cease and desist" letter because utility officials photographed "large amounts of dirt piled on top of the main," which makes the "critical" pipe too difficult to reach in an emergency.
The site of the wedding was a private, for-profit, vehicular campground, largely paved over in black asphalt, full of compacted dirt, giant holes dug in the forest floor and mounds of dirt piled up around those holes.
