I started this model some time ago and decided it's time to finish it!
Add supports as you see fit. I didn't use any for the "NBC Hill cut.stl" and it worked out fine.
This is a long print at .15 layer height. It took over 24 hours.
Printed in black and yellow PLA. The moon can be lit from behind so it glows. You could also use glow-in-the-dark filament....?
The crosses have been separated so they would not need supports.
The print measures 180,102, 90 mm. If you choose to reduce the scale, check the gate and fence as they will quickly become to small to print.