The McNeil River State Game Sanctuary and Refuge is in Alaska and can be reached by floatplane.
Canon 5D Mark III
Canon 400mm f/2.8L IS (shot at f/3.5, 1/4000sec, ISO 400, 400mm)
These two bears, a mother and offspring, stood on their hind legs to look over the tall grass. They had heard a rumbling in the distance...it was a large male bear in heat. The "Lookout Bears" quickly moved away to avoid crossing paths with the male bear.