I suspect the author means to liken it to zen sand gardens[1]. Though people also just like the name zen. [1] https://en.wikipedia.org/wiki/Japanese_rock_garde

I suspect the author means to liken it to zen sand gardens[1]. Though people also just like the name zen. [1] https://en.wikipedia.org/wiki/Japanese_rock_garden https://en.wikipedia.org/wiki/Japanese_rock_garden