Search Result For deepest

The day people reached the deepest place on Earth – level 1

23-01-1960

It is the beginning of 1960. Two men are preparing for...



The day people reached the deepest place on Earth – level 2

23-01-1960

At the beginning of 1960, two men were preparing for a...



The day people reached the deepest place on Earth – level 3

23-01-1960

At the beginning of 1960, above the Mariana Trench in the...



The day people started to make the deepest hole – level 1

24-05-1970

The deepest hole made by people is in Russia. The name...



The day people started to make the deepest hole – level 2

24-05-1970

The deepest hole ever drilled is called the Kola Superdeep Borehole....



The day people started to make the deepest hole – level 3

24-05-1970

The deepest hole ever drilled is called the Kola Superdeep Borehole....



The day the longest railway tunnel was opened – level 2

01-06-2001

The longest railway tunnel in the world is in Switzerland. Its...



The day the longest railway tunnel was opened – level 3

01-06-2001

The Gotthard Base Tunnel is in Switzerland and it runs under...