Sink is the name of the channel that receives the Water from rain or some kind of surface current. The term is linked to the verb plunge, which refers to immerse or sink.

SinkThe sump, therefore, allows sink the waters. In general, it is a circular depression that, at a geological level, is known as sinkhole. The sinkholes usually form on limestone surfaces, they have a depth variable and have walls of significant inclination.

The action of the water itself causes the subsoil to erode and lead to the formation of a cave. As the water seeps in, the ceiling of the cave collapses and the sinkhole is created. It is important to note that underground rivers feed from the sump, increasing its flow thanks to the water from it.

There are several natural sinks that exist on the planet and that have become well known for their spectacularity in terms of size or for the functions they perform. However, among the most important we can highlight the following:
-Bimmah. One of the most spectacular in the world is this one, located in Oman (Asia), since it has the peculiarity of having an underground tunnel of approximately 500 meters that has become a place of charm for diving enthusiasts. And it is that it not only communicates with the sea but also has a perfect mix of fresh and salt water.
-Cave Sima Humbold. Of all the sinkholes of this type that exist, this is the most important since it has the greatest depth of those known, a total of 350 meters. It is located in Venezuela.
-Zacaton. It is located in Mexico, is full of water and has a depth of approximately 339 meters.
-Dead Sea sumps. Although it has not been possible to rule with absolute clarity, we can say that it is considered that there are more than 3,000 that exist in that corner of the planet, since the first appeared in the early 1980s.

Sinks are sometimes used to dispose of trash and waste. Such action harms the natureas it pollutes groundwater and aquifers. This is why it is important not to turn sinks into landfills.

Another measure that affects sinks and causes imbalances in the environment is he lock or seal. Sometimes the sumps are sealed with material to have the possibility of developing constructions on them. When the sump closes, not only is the underground water flow altered, but it also affects the natural drainage of the water, a situation that can lead to flooding.

For all this, it is important to protect the sumps and keep them clean: in this way the chances of flooding the sinks are minimized. land.

In addition to all the above, we cannot ignore the fact that the well-known Kyoto Protocol establishes that various activities that are carried out using the land or that revolve around it are also considered sinks. We are referring specifically to reforestation, deforestation and also afforestation.