Sinkhole also form in high and dry places in specific locations. Sinkholes that capture drainage can hold it in large limestone caves. These caves may drain into tributaries of larger rivers. The formation of sinkholes involves natural processes of erosion or gradual removal of slightly soluble bedrock (such as limestone) by percolating water, the collapse of a cave roof, or a lowering of the water table. Sinkholes often form through the process of suffosion. For example, groundwater may dissolve the carbonate cement holding the sandstone particles together and then carry away the lax particles, gradually forming a void. Occasionally a sinkhole
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