Looks fake as such but who knows .. I had quite an old book once which had an account of a well respected naturalist rounding a bend in a small river in south america to come across a snake crossing it.. is head up the bank one side and tail still not in the water in the other on the other and the span of the water being around 40 feet.
http://urbanlegends.about.com/librar.../aa061101a.htm
been round the net for years .. who knows ?.. but there are a few places in the world away from people where who knows whats slithering or crawling around.