Watch: Man made tunnel or underwater waterfall?

Covão dos Conchos is an engineering marvel. The Conchos is located on the Serra de Estrela mountains of Portugal. Constructed in 1955, the Covão dos Conchos is a part of a hydroelectric dam. Though it has plant life growing inside, it is made of concrete and granite. The hydroelectric system has a height of 4.6 metres and a circumference of 48 metres. The depth of the tunnel is 1519 metres long. It serves to collect water from Ribeira das Naves and funnels it to Lagoa Comprida.

Subscribe to Times Of India's Youtube channel here:

Also Subscribe to Bombay Times Youtube Channel here:

Social Media Links:
Facebook :
Twitter :
Google + :

modi speech today,rahul gandhi,times of india,election 2019,lok sabha,headlines,news,news today,election news,morning news,times news,dam,covao dos conches,hydroelectric,hydroelectric plant,monticello dam,portugal,pracana dam,spillway,falls dam,vertedouro,hydroelectricity,renewable energy,