Eli5: How do the dig really deep holes that arent wide enough to take an excavator into the hole?

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Theres a scuba diving center I drive by while working that started building a pool to practice in. The pool is only about a 20ft x 20ft square however it has to be at least 20 ft deep (im guessing, but if its to practice scuba diving its pretty deep.)

I was wondering how they dig a hole that deep when the hole is not wide enough to take an excavator into like im used to seeing.

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3 Answers

Anonymous 0 Comments

If you need a deeper hole you use an excavator with a longer boom. https://youtu.be/6KqxzMf7ozA

And if you need a really deep hole you use a stupidly long boom. https://youtu.be/6KqxzMf7ozA

Not enough you say, well it’s time to go straight to ludicrous. https://youtube.com/shorts/laKYWGBCixg?feature=share

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