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 Knight of the Word that lead her to this truth. John realizes that he's been subtly led toward the Void ever since Stefanie came into his life, after San Sobel; as a shape-shifting demon, Stefanie forged documents to support the embezzlement accusations, attacked Nest and her friends in the park, set fire to the shelter to explain the wounds she'd sustained trying to kill Nest, lied about John being fired, and morphed into Simon at the museum so John would be tricked into killing the real, innocent Simon and completing his turn to the Void. Finally, John confronts Stefanie at his apartment. She does