When you hear the words pine cone you are probably used to thinking of a little thing that can easily be held between your thumb and forefinger. However there is a pine cone out there which can easily grow to be as big as a watermelon, that's bigger than your head. Like a lot of weird stuff, it comes from Australia. Specifically, these pine cones come from the east coast and grow from the Araucaria bidwillii, massive trees that are truly old and can easily reach an impressive height of 45 meters.