isolated place; remote area; landlocked island
Figurative expression for a place that is cut off from surrounding areas, like an island on land. Often used for remote villages or areas with poor transportation links.
That village is a remote place surrounded by mountains.
Until the new road was built, this place was isolated from the rest of the land.
Compound of 陸 (land) + の (possessive particle) + 孤島 (isolated island). Literally 'an isolated island on land', used figuratively for remote inland areas.