I live on Long Island and for the last 6 days it has rained very heavily.
Last year I noticed a small depression in my backyard. It was approximately
4" wide and 3"-4" deep.

I was mowing the lawn after the rains and noticed that the depression is now
much larger, approximately 12" wide and 5" deep. I am wondering what caused
this? How can it be fixed and is it serious?

Thanks for your help.

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