Ash heaps refers to a landfill or a place where trash is thrown and built up.
“The ash heaps towered as high as 90 feet above the earth before the city picked the Flushing park meadows as the site for the fair. The place was just a swampy dump heap then, with the neighbors complaining of dog-sized rats and mosquitos with pneumatic drill stingers."
-An article from the The New York Times in 1939
A picture of ash heaps
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