"Make it too tough for the enemy to get in, and you can't get out."
Believe it or not, this was once a one lane road. It's an old forest service road that was closed back in the 1960's, then blocked with earthen berms. This particular road runs from the top of my mountain, along a saddle, to another mountain top with a spectacular 360 view. That mountain is in the National Forest. This is considered relatively clear in terms of getting through it. If you go off the old road six feet in either direction, you are pushing through tangles of mountain laurel, downed tree piles, blackberry bushes, and other impediments to foot travel.
From my place to this road, you go up a very, very steep mountain side. There are some deer trails which you can use if you know where they are. If you didn't, coming down the slope to my compound in daylight would mean having a lot of luck and making an inordinate amount of racket. At night, it would be dangerous and virtually impossible.
All of the other approaches to the house are directly through the woods. Maybe if you had my place marked on a GPS, you could navigate through this heavy brush, but you'd sure have to make a lot of noise to do it. Mindful of the "The Japanese can't get tanks down the Malaysian peninsula so we don't have to worry about that" theory, I have some technological assistance on possible avenues of approach through the woods. I am in the process of replacing some of that now, since our very wet , humid summer has given some of the older gear the coup de gras. I got my money's worth out of it.
There are some very low tech passive security systems you can put out that work just as well, closer in to the house, and are neither expensive nor susceptible to weather.
My problem is that this place has never been easy to get into or out of, even without any help from me.
You have to come a long way out into the woods, on an old gravel county road, to get to the foot of the mountain. There, where my trail goes up the mountain, there's a steel gate. On one side of it is big gully with a stream in it, on the other, a sheer cliff. You can get out and walk up, but not even a motorcycle is driving up.
Unless, of course, they cut the lock up. It's a good lock, designed to protect storage lockers, but as the engineers say "an obstacle not protected by fire, is not an obstacle." Ok. But it keeps casual morons from driving up my trail in new 4 wheel drive vehicles they don't know how to operate. At least with the gate, I don't have to get into their vehicles and get them turned around up where I live, as I used to have to do. There's no turn around up there. If somebody comes up the trail now, I know they went to extreme efforts to cut that lock and I can greet them appropriately without preamble.
Without being too talkative, if anyone is coming up the trail I know it inside the house immediately. I can follow their progress towards me, which precludes casual passers by like deer or bear from causing an uproar at the house.
Lately I put some physical impediments across the trail, and now it's even more of a hassle to get out of here. I have to take them down to get out myself. So now, even if the weather doesn't make the trail dangerous with ice or snow, and even if there are no trees down across it (as there were this week), I can't just drive down to the gate. I have to stop. Chock the rear tire (I learned the hard way a while back not to rely on one emergency brake going down the mountain), unhook or move whatever, drive through, stop, chock the wheel, put the device back on line, and so forth.
But I'm retired, and time is not a problem. The one instance where you don't take these precautions will be the one time you wish you had. I remind myself of that constantly.