noun which may take the genitive case particle 'no'
uncultivated; wild; unreclaimed
Describes land that has not been cleared or cultivated for farming. Often used in formal or descriptive contexts. The synonym 未墾 is also used.
See also: 未墾
その地域には未開墾の土地が広がっている。
Uncultivated land stretches across that area.
未開墾地
There is a plan to turn the uncultivated land into farmland.