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Now, think about everything that you read. Why was building the summit tunnel considered an engineering marvel? write a paragraph that explains your ideas

Respuesta :

ello189

Answer: They had long days, over a one-third mile. People built from both ends and from the middle to the tunnels.

Explanation: from edge 2022

cookie022022

Answer:

It was very long, just over one-third of a mile. It was built through hard stone called granite. Crews built it from both ends and from the middle, and the tunnels were just two inches off. It was 124 feet inside the mountain and was built entirely by hand.

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