Snow steps
A pair of canada geese meander along the southern end of the Cobbosseecontee stream in Maine last year
The initial dam on the primary stream feeding the local “beaver bog” looked like this a few months ago. The beavers have added several other dams both downstream and, more significantly, upstream. The dams upstream have created a much larger area of flooding.
The trail through the woodland that makes up the Small-Burnham Conservation features the quite un-natural but simply built bridge.