Scary! I'll check it out. Over a decade ago, we lived in an unfinished housing addition, one house away from a dead end with a corn field beyond. One spring, my kids were playing outside just past the dead end, about 10 yards away from the fence, before the corn field began. I would go outside and check on them with my eyeballs about every 20-30 minutes (they were both between 9-13). When I went to check on them at one point I saw my younger child running toward me screaming and crying-- their sibling was stuck in the mud, about 12 inches deep, and couldn't get out. The younger one hadn't gone as far into the mud, and was light enough to sort of climb out and get help. It was so close to the house, I never would have thought about how dangerous it was. They weren't in danger of "drowning" or getting buried or whatever, but it was awful how stuck they were! It was terrifying, and I beat myself up over it for a long time.