Sometimes a person uploads an observation from years ago where they don’t remember the location. For a couple of my over 7000 observations I have observations with 500 km accuracy. All I know for these observations was it occurred in Ontario (or a minor dip in Quebec) because I haven’t been further than that. With my most recent camera it geotags my images if it gets a lock. If I don’t get a lock I estimate location based on observations where I got a lock.