After Prithu had chased the earth, she told him what to do, so that agriculture would flourish again.
"My dear King, may I inform you that you have to make the entire surface of the globe level. This will help me, even when the rainy season has ceased. Rainfall will remain on the surface of the globe, always keeping the earth moistened, and thus it will be auspicious for all kinds of production." Thus the king took his bow and arrow and aimed at the great mountains to level them.

(Srimad-Bhagavatam 4.18.11)