undeveloped land; frontier area
Refers to land that has not been developed or cultivated, often used in contexts of exploration, settlement, or economic development.
There are still many undeveloped areas remaining in this region.
The plan is to clear the undeveloped land and turn it into farmland.
Compound of 未 (mi, 'not yet') + 開拓 (kaitaku, 'development, cultivation') + 地 (chi, 'land'). The word follows a standard Sino-Japanese word formation pattern.