This question is a bit similar with how high does a fence need to be to prevent European brown bear to climb it? question but not exactly (that one specifies a fence, and needs to provide vision and is able to dig around).
I want to build a wall around my property in order to keep the bears away (Romania country, European brown bears). I want to be able to camp / cook / do anything I want inside. I am considering a smooth concrete wall (so it can't be climbed). How tall does it need to be?
Would a vertical bars metal wall be more effective (if yes... how tall should that one be)? Also how far down should I dig?
I am considering a 2.1 m concrete wall, with 40 cm foundation. Is it too small?
In order to not receive off-topic answers / comments (I know questions like this tend to go that way, as you can see in linked post):
- No, I cannot consider hiding food / adding ammonia etc. Can't hide a tree full of fruits.
- No, I cannot consider electric fencing. Having kids playing around a 10k volt fence doesn't feel like a good idea to me.
- No, I cannot add a rooftop. I like the sun... so do my trees :)... and my kids... and can't enclose a 2000 sq m area easily (it is possible but... nope).
- Yes, there are reasons to worry about this (and I am glad to provide them in private but that's not the topic). Otherwise I wouldn't ask or be ready to invest thousands of $ in this.
Any other ideas that are on topic (preventing a bear to get inside) are welcomed. Resources are surprisingly scarce on this topic and zoos only have specifications for fences (since the audience need to see the animals) and that doesn't really apply to my situation (I don't need to see them... at least not in my garden).
Thank you for your help, I appreciate it.