7 impressive scale works underground

Many giant buildings hidden deep underground make all visitors overwhelmed by their magnificence.

El Teniente, Chile

Tunnel network inside El Teniente mine.(Video: YouTube).

Since its inception in 1905, El Teniente mine is located south of Santiago, Chile, continuously expanding. Located in the Andes, the largest copper mine in the world is often dug deeper to extend mining time. The mine has more than 3,200km of underground tunnels and nearly 1,600km of underground tunnels.

Cappadocia, Turkey

A corner of the underground city below Cappadocia.(Photos: Pinterest).

Giant underground complex in Cappadocia, Turkey, includes more than 200 cities and villages, some dating back to 3,000 BC. In 2013, archaeologists found the largest city in the 45-hectare area.

Vivos Europa One, Germany

Today, Vivos Europa One is a shelter for the super rich.(Photo: Vivos).

At first, the work was carved into the rock below the mountain of more than 120 meters to contain the military equipment of the Soviet army. Today, the Vivos Europa One is privately owned with an area of ​​30 hectares, providing the world's largest underground shelter for families in need of long-term protection.

Drainage system, Japan

Flood discharge system below Tokyo city.(Video: YouTube).

The largest underground flood discharge project in the world is about 36km from Tokyo, 22m from the ground. The highlight of the project is 59 reinforced concrete columns, each weighs 500 tons, forming a solid support pillar for the 177m high pressure regulator tower, 78m wide and 25m long.

Sanford Lab, South Dakota, USA

Sanford Laboratory specializes in dark matter research.(Photo: Sanford Lab).

Once the largest and deepest gold mine in the Americas, Sanford laboratory is located more than 1,500m above the ground. At a length of kilometers, equivalent to six Empire State buildings in New York, this laboratory is the perfect place to study dark matter thanks to the massive block of rock above which completely blocks cosmic rays.

Wieliczka salt mine, Poland

A gallery in Wieliczka salt mine.(Photos: Pinterest).

Exploitation began in the 13th century and existed until 2007, the Wieliczka salt mine on the outskirts of Krakow, located at a depth of more than 300m underground and about 290km long. Today, the mine is requisitioned to open galleries along 9 floors, three of which allow visitors to visit.

Toledo, Italy train station

Toledo train station is considered one of the most beautiful stations.(Video: YouTube).

Toledo Railway Station opened in 2012 in Naples, Italy. Although located 50m deep, this subway station is still very airy with an area of ​​more than 43,000m ² . The multi-storey train station consists of walls left over from the late 15th century. The underground corridor connects to the bustling district above, allowing natural light to flow down through conical and hexagonal structures. .