man, what can I say? Wow. I'm not sure if you understood what I was trying to say, but I know that I don't understand what you're saying. I don't know what you mean by "safe location" or what it is that "they" are removing from said location. I am confused.
To clarify, if I may, I don't think anybody will "find" the deposit box. This is not a scenario that I am guarding against. What I have here is a mechanism in place that protects against other (perhaps illegitimate) claims on the estate.
Maybe I'm not understanding correctly. So let's try, and get things straight. You said that you have a location in geography that only your wife would know of, and that you've buried your nanos seed. I did initially misunderstand that I thought you were burying both the deposit box with the wallet, and the seed. You then said if a "unfriendly" which I'll refer to as a stranger happened upon your deposit box they couldn't get in.
Alright, so we've cleared things up without being rude right? Okay, so there's a fundamental problem with storing anything in a spot, and burying it. If it's in the public, and not private land then it could be found by a stranger whether that's through construction work or someone happens to dig up in that "spot". The spot is the safe location that I was referring too.
There's been several stories spread through the newspapers, and probably online that people have had their secret stashes discovered by members of the public. Mostly by accident. Okay so what I'm trying to say here that you shouldn't assume that just digging a hole, and burying your stash would mean it's safe. Even if it's a very slim chance of someone stumbling upon it you should take other precautions.
Your wife might not know much about cryptocurrency, but I would 100% recommend that you encrypt that seed even if you do bury it. It shouldn't be stored in plain text anywhere. You could teach her how to decrypt it right now.
I know you said your not concerned about your location being found, but you absolutely should be. It's your seed, and with that anyone can get into your funds with or without the wallet. You should always practice the best security possible, and guard against as many possibilities as possible. I'm only saying this, because you offered advice on a thread about exactly this, and I'm offering some advice on how this could be improved if you wanted too.