未み開かい墾こん地ち

noun

virgin soil; uncultivated land

Refers to land that has never been cultivated or developed, often used in agricultural or geographical contexts.

• その地ち域いきにはまだ広こう大だいな未み開かい墾こん地ちが残のこっている。

  There is still a vast area of uncultivated land in that region.