Sinkhole rain. An analysis of a case of sinkhole formation under a retention pond due to a large amount of rain can be seen in a sinkhole collapse study. Sinkholes have been used for centuries as disposal sites for various forms of waste. A consequence of this is the pollution of groundwater resources, with serious health implications in such areas. The Maya civilization sometimes used sinkholes in the Yucatán Peninsula (known as cenotes) as places to deposit precious items and human sacrifices. When sinkholes are very deep or connected to caves, they may offer challenges for experienced cavers or, when water-filled,
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