For the past couple of years at the begining of spring and when the snow starts to melt, I have been getting these "burrows" developing. They look like mole tunnels or piles of turd droppings. It looks like something is hibernating in the ground over the winter and coming out in the spring. I have attached pictures to see if someone can help me figure out what it is and how to combat it. Thank you for any information and help!