C79 Create the Most Sturdy Sand Wall

Under the moonlight, Everett was alone, meticulously going over his finances. He was aware that to seek out his grandfather deep in the desert, he needed to transform his base into the most formidable sandstorm barrier in the world.

"The second windbreak should be spaced five kilometers apart, and the third one, twenty kilometers. I need to figure out how many desert pillar cacti are necessary