There are so many variables to how long something like this would last, but more important, they are extremely unsafe and not worth it.
A somewhat different scenario but same concept, a few days ago a girl died from a snow fort that collapsed.
Also they are confined spaces and depending on how you shore them up and how deep you go, there are other dangers like making sure there is fresh air.
https://www.ehstoday.com/construction/four-minutes-life-and-death-confined-spaces
Fairly flat or hilly land, usually pretty windy. Long shorelines with beaches that attract a lot of German tourists. Inland it's a mix of farmland and heather heathland.
Amazon has an excellent Table of contents here but I dont have the time to make a neat PDF and add into the the file right now plus my skills at making a neat pdf documant with nice formatting are poor and it would take me quite a long time. If someone could help with it that would be great, if not ill try to make one this weekend.
EDIT: if you open the file in adobe a table is provided, I opened mine in my browser so I did not know that.
Checked my local library and there was few books available but most of them were in Finnish. Only English one i found was Celebrating Birch: The Lore, Art and Craft of an Ancient Tree, which is also available on Amazon.
This video might also help: https://youtu.be/UOGtVoVnmkQ
Loads of stuff you can use nettles for:
https://www.amazon.co.uk/Uses-Stinging-Nettles-Piers-Warren/dp/095418999X
Few examples:
More or less.
He started it the channel making a sandwich from scratch, shirt from scratch, etc… where he would grow the plants, make the bread or cloth, or whatever, and make the whole thing, and give a cost using minimum wage.
Then he did a reset. He only uses tools he’s managed to make (mostly), and started out with stone tools and learned some knapping (wonder if that’s spelled correctly). He worked up to copper and bronze tools, and eventually some iron. Most of the metal working is done by a blacksmith now, but he still does some of it.
It’s very reminiscent of Lewis Dartnell’s work (and he collaborated with him for making his own eyeglasses), and How to Invent Everything (by Ryan North). Like I said, it’s not the exact same, but the subject is similar enough that it’s worth it, plus the channel itself is entertaining.
But a lathe from scratch, there’s also this series of books: https://www.amazon.com/Build-Metal-Working-Scrap-Complete/dp/1878087355, (can be found free in pdf), which are on my to read list, but I haven’t read them yet.
> saying they must have had unknown technology seems to miss the point of the primitive technology, which is to revel in the glory of human ingenuity.
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I'm not big on booze or physical contact but I would buy you a beer and offer a hug. This is well-stated. I can rattle off countless examples of a single person with means producing a product or implementing a concept that radically altered society afterwards and/or inspiring others.
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Some easy ones:
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The latter is a personal favorite of mine. It shows a combination of ingenuity across our species rather than with an individual. One person/group got ahold of a wolf cub and raised it. Other recognized the value of having pro-human wolves. BRB taking the dog out <3
You might be interested in this. I've been thinking of building a barn with hand tools and logs.
I would reccomend the Peterson Field Guide to Edible Wild Plants and the National Audobon Society Field Guide to Northeastern Trees
That's what I've been using and enjoying but a lot of people would reccomend a local expert before you (if you decide you want to) eat a wild plant. If you want to know the uses., other than eating, that a plant has than I'm not so sure how to help with that as I've never really seen a book be specifically about that, I'm sure one exists but I havn't seen it. I learned a lot of stuff through the internet as well, it can be really helpful I find.
Rudolf Koch did a wonderful book on the meaning of various signs / symbols --- The Book of Signs --- it's available in an inexpensive Dover reprint from Amazon (and likely other places): https://www.amazon.com/Book-Signs-Dover-Pictorial-Archive/dp/0486201627