I Build Up Castles I Tear Down Mountains I Make Some Men Blind

Riddle: I build up castles. I tear down mountains. I make some men blind, I help others to see. What am I?

Answer: Sand.

Source: https://www.riddles.com/1265

I build up castles. I tear down mountains. I make some men blind, I help others to see. What am I? — I build up castles I tear down mountains I make some men blind by Anonymous v1.

Riddle: I build up castles. I tear down mountains. I make some men blind, I help others to see. What am I? Answer: Sand. — by Anonymous v2.