Mount Tonante Tunnel

The Mount Tonante Tunnel is a highway tunnel in Majatra, under the homonym mountain in the Nayar Range. It links the State of Frostland, formely knwon as Shinatawa, in Solentia, with the Region Trivendito, in Istalia and it is one of the major trans-Nayar transport routes between the two countries.

History
On impulse of the Istalian Government, both Istalia and Solentia approved the project between 4562 and 4564, allowing the beginning of the works in 4568 and the drilling operations in 4572. In 4581, the tunnel was inaugurated at the presence of the highest officials of Istalia and Solentia while it opened to vehicle traffic in 4582.

Structure
With a length of 17,611 metres the Mount Tonante Tunnel is among the longest worldwide. It is actually composed of two main tunnels dedicated to car traffic running alongside a central service and rescue tunnel, connected every 500 meters by passages equipped with fire doors. At the two access of the tunnel, solentian and istalian rescue and firefighting forces are always ready to intervene while in the middle of the service tunnel there is a security intervention facility handled by the istalo-solentian society managing the infrastructure. The tunnel passes almost exactly under the Taglierino Peak, one of the peaks of Mount Tonante. At this spot, it lies 3,998 metres beneath the surface, making it the Majatra's deepest operational tunnel and among the deepest worldwide.