Pipe Creek Sinkhole have also been found there. Pipe Creek Sinkhole preserves an ancient wetland. It was created by the collapse of a limestone cave in a Silurian reef formation. That left a steep-sided depression about long, wide and deep. When water collected in the depression, it became the habitat of the plants and animals whose remains were preserved there when the sinkhole was buried by glacial outwash and till during the Pleistocene Epoch, two million to 11,000 years ago. While the ecology of the Pliocene in North America is well-known from fossil discoveries in other places, notably coastal sites, the Pleistocene glaciers
Dream Caused by the Flight of a Bee Around a Pomegranate a Second Before Awakening them is Dalí's first use of an elephant with long flamingo legs, found in his later compositions such as "The Temptation of St. Anthony". The elephant carries on its back an obelisk, inspired by Bernini’s "Elephant and Obelisk" in Rome's Piazza Santa Maria sopra Minerva. The bayonet, as a symbol of the stinging bee, may represent the woman's abrupt awakening from her otherwise peaceful dream. This is an example of Sigmund Freud's influence on surrealist art and Dalí's attempts to explore the world of dreams in a dreamscape. The elephant is a distorted version of the Piazza della Minerva sculpture