The Talking Lake

I was on the porch decorating the tree when I heard a sound like someone trying to lift something heavy.  In fact I thought it was Case carrying something around the side of the house.  Soon he walks on the porch and the sounds continue.  It's not him.  We had been told by locals that the lakes make a groaning sound when it is thawing.  Temperature was up to 39 by mid afternoon so the recently frozen lake was thawing.  Odd, very odd.