We had terrible floods in spring of 2011. That winter ice storm. Next winter below freezing for many days. All unusual for our area. I have a large deep hole with no water in it under my well house that developed and is now elongating. We have lots of rock in our area and the larger foundation rock is still there there but the soil is gone. I dont know what happened to it? I dont know what to use to fill it back in. River Rock is readily availabe. I dont have any pics but I am very concerned about why and what happens next. We are on a tight budget looking for ideas.