Stock Photo: Dawn reflections at Goose Pond, added to the Walden Pond State Reservation in 2002. Canada geese in background mist. Branta canadensis. Goose Pond retains the beauty and tranquility that inspired Henry David Thoreau, now largely lost at neighboring Walden Pond, which has become an overpopulated public recreation area attracting a quarter of a million swimmers each summer. Concord, Massachusetts, New England, USA.