原げん生せい

noun which may take the genitive case particle 'no', noun

primeval; primordial; primitive; pristine

Describes something in its original, untouched, or earliest natural state, often used for landscapes, forests, or ecosystems.

• この島しまには原げん生せい林りんが広ひろがっている。

  A primeval forest spreads across this island.

• 原げん生せいの