There is lots of scientific research into dolines across Spain such examples are in Zaragoza, North East Spain (Pueyo-Anchuela et al., 2010 and Iberian Peninsula (Aranburu et al., 2014). Even including the Ebro basin, Spain discusses how the process is still very active at this current moment within the karst landscape (Sorian & Simon, 1995; Pueyo-Anchuela et al., 2009). These have even been located around the Sorbas region of South East, Spain. These are however at a smaller scale (Sana et al., 2015).
Below are a Google Earth images and iconic sink holes around the world these have been broken down into multiple images to make it easier to observe.
Below is Africa, a large proption of these holes within Africa contain water. The Blue Hole in Dahab is considered to be very dangerous to divers due to the arch way contained within the doline.
The video below is of the Blue Hole, Dahab being free dived. It is so dangerous for recreational divers due to air consumption at 50m.
The Google Earth Image is of iconic dolines in the Asia.
The video produced by the Telegraph (2012) shows a doline in China swollowinga girl as she falls through the ground.
Dolines in the Caribbean
The video is of cave diving from the Caribbean and discusses the formation of these caves in Karst landscapes. Many of these could create dolines and many of these seem the entry point for such expedition. (Documentary TV, 2014).
Dolines in Central America including the two large events within Guatemala in 2007 & 2010.
Iconic sinkholes within Europe.
As can be seen many doline events have occurred within Northern America
Dolines frequently ocur around Florida due to the limestone disollution within the envrionment. Here is an example of a doline causing a collapse of a resort (ABC News, 2013)
Dolines in Mexico
Dolines in Oceania
Dolines in South America
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