There are many forbidden areas for human beings in the world, such as Cocoxili, Qinling, Lop Nur, Kunlun Mountain and other places, but there is also a forbidden area for human beings with the title of the world's best, and it is also called the "lung of the earth", that is, the Amazon rainforest, and the Amazon River running through it.
In the Amazon rainforest there is also the world's most powerful river, no, it is the world's largest river, because the Amazon rainforest is the world's largest rainforest, so the Amazon River Basin, the world's largest plain.
Amazon
The Amazon River can be said to be the largest, most complex and most hidden secrets on the earth, its length is 6437 kilometers, the first Nile length is 6853 kilometers, although the difference in length of the two rivers is not much, but the Nile is also recognized as the world's first longest river.
Just speaking of the Amazon River, the world's largest river, its runoff is 7 times that of the Yangtze River and more than 70 times that of the Nile. The Congo River, which has the second largest runoff in the world, is only 1/5 of the Amazon. This is mainly because 14 of the top 50 rivers for runoff end up in the Amazon estuary, and it has more than a thousand tributaries, 17 of which are around fifteen hundred kilometers long.
Where these tributaries flow, as well as where the Amazon River flows, it is very vast, spanning eight countries, thus forming the largest tropical rainforest on the planet, covering 40% of the entire area of South America, about 1.4 billion acres.
Because the ecological protection of the Amazon primeval rainforest is very good, it also promotes this place to become a forbidden area for humans, even the local indigenous people will not easily explore the forest, let alone swim in the surrounding underground rivers, because it is full of dangerous factors.
In the Amazon River, piranhas and electric eels, which are terrifying fish that only appear in movies, can be said to be very dense, and schools of piranhas will be eaten in a short time when animals or humans fall into the river.
It is no exaggeration to say that if a cow falls into the Amazon River, it will be gnawed to the bone by a dense school of piranhas in less than ten minutes. A Spanish expedition team witnessed a shocking scene on the Amazon River, when a monkey fell from a tree into the Amazon River and was eaten into a skeleton by piranhas.
Electric eels will also instantly release voltages as high as 600 volts when they perceive danger or predation, you know, the human safety voltage is only 36V, if people are electrocuted by electric eels, then they will die in less than 1S.
Not only that, there is also a parasitic catfish called toothpick fish in the Amazon River, which will actively hook the gills of other fish with spikes when encountering other fish, and dilute the blood, so this fish is also called "vampire". The most terrifying thing about it is that it can burrow into the bladder through the human urethra, suck human blood inside, and even multiply and survive.
Why is there no bridge over the Amazon?
The mainland has the title of the world's most powerful infrastructure, and many countries call China an "infrastructure maniac", so why is there no bridge built over the Amazon River, is it that the mainland can't do it with technology?
In fact, no one has built bridges on the Amazon River so far, because the Amazon basin rivers are scattered, such as a network distribution, I don't know how many bridges to cross, and the population on the Amazon plain is only 15 million people, these people basically live a life of fishing and hunting, basically will not use the bridge that costs a lot to build, so the construction of large bridges has little value to the local society and economy.
Moreover, the Amazon River is very wide, known as the "river sea", and the entire basin of the Amazon River is rainy all year round, basically the whole rainy season construction, no one can give a suitable construction plan, the mainland is no exception.
In addition to the cost and construction plan, the undeveloped tropical rainforest and tropical rivers have a great impact on the ecological environment on the earth, and the construction of bridges here also needs to pass the environmental impact assessment of the World Environmental Protection Organization.
summary
The environment of the Amazon River is quite primitive, there are many unfamiliar creatures, so that it has long been a forbidden area for humans, but for people living in the local area, they have been able to live in harmony with these wild animals for a long time, so not building bridges over the Amazon River can not only save money, but also protect the local ecological environment to the greatest extent.