Sinkhole may exhibit a visible opening into a cave below. In the case of exceptionally large sinkholes, such as the Minyé sinkhole in Papua New Guinea or Cedar Sink at Mammoth Cave National Park in Kentucky, an underground stream or river may be visible across its bottom flowing from one side to the other. Sinkholes are common where the rock below the land surface is limestone or other carbonate rock, salt beds, or in other soluble rocks, such as gypsum, that can be dissolved naturally by circulating ground water. Sinkholes also occur in sandstone and quartzite terrains. As the rock dissolves,
A Barnyard Frolic only to be stuck midway. Following his work with the rooster, Krazy, for some reason, milks a cow. He then befriends a duckling, and pours the milk into a hole in the ground which the duckling swims in. After spending time with the duckling, Krazy heads to another location where he takes a sock and plays it like an accordion. A pair of hens come and dance with him. They like his performance a lot that they collapse in amusement. The farmer then comes into the open, and is surprised to see the rooster who is still stuck in the