Pristine and Primeval

Pristine adjective - Being in an original and unused or unspoiled state.

Primeval is a synonym for pristine in original topic. In some cases you can use "Primeval" instead an adjective "Pristine".

Primeval adjective - Relating to or occurring near the beginning of a process, series, or time period.

Pristine is a synonym for primeval in ancient topic. You can use "Pristine" instead an adjective "Primeval", if it concerns topics such as earliest.