Question

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

Answer 1

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.

Answer 2

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