noun
virgin soil; uncultivated land
Refers to land that has never been cultivated or developed, often used in agricultural or geographical contexts.
その地域にはまだ広大な未開墾地が残っている。
There is still a vast area of uncultivated land in that region.
Compound of 未 (mi, 'not yet') + 開墾 (kaikon, 'cultivation, reclamation') + 地 (chi, 'land').