@james, @luke-turbulenz : I’m building my base on a mountain. I have the problem that I’m not able to protect my stairs because the little horizontal tunnel out of the staircase has the error “plot would not be joined vertically to another plot”. I own the beacon above and i “beaconed” the complete way down the mountain. Why is this not allowed ?
As you can see in the screenshot I’d like to protect the highlighted area but the system does not allow this. It would be a huge waste of plots if I need to protect the complete way down (where is only air).