The team of scientists suggested that ancient tunnels located in different parts of the world could be interconnected and have a single branched network, reports esoreiter.ru.
This hypothesis was put forward by researchers on the basis that structures in the Tien Shan, Urals, South America, Sahara and Western Europe have strikingly similar architecture.
In 2014, Polish archaeologist Jan Paenk said that many thousands of years ago, underground European roads connected many states. According to French archaeologists, most of these roads were built about 12 thousand years ago.
German archaeologist Heinrich Kusch supports this version, stating that ancient underground roads connected the ancient settlements of the European continent. The tunnels themselves are very narrow, about 70 centimeters wide, and in some places there are even traces of ventilation and lighting.
In his book – Secrets Of The Underground Door To An Ancient World – he claims the fact that so many have survived after 12,000 years shows that the original tunnel network must have been enormous.
“Across Europe, there were thousands of them – from the north in Scotland down to the Mediterranean” he said.
“Most are not much larger than big wormholes – just 70cm wide – just wide enough for a person to wriggle along but nothing else.
“They are interspersed with nooks, at some places it’s larger and there is seating, or storage chambers and rooms.
“They do not all link up but taken together it is a massive underground network.”
Some experts believe the network was a way of protecting man from predators while others believe that some of the linked tunnels were used like motorways are today, for people to travel safely regardless of wars or violence or even weather above ground.
In some cases writings have been discovered referring to the tunnels seen as a gateway to the underworld.
Currently, researchers have no evidence that ancient tunnels connect different continents and countries. For this, scientists have yet to conduct a number of serious studies that will reveal the general mechanism for creating roads underground throughout the planet.