A Double Edged Sword

Memory floods like a monsoon, it drowns and it quenches both.
Weaves a myth about identity, lends purpose to our oath.
Swallowing all, it mulches, softens ground on which we stand.
Transforming every bank it touches, fills the mouth with sand.

Do not underestimate the current, filled with ancient pain.
Pulls the weak into its undertow, a witness to the rain.
Reliable and forgiving, our valley turns lush and green,
Fragile and always changing, a paradox, our queen.