Primeval – original; primitive; belonging to the first or earliest period

“This is the forest primeval. The murmuring pines and the hemlocks,

Bearded with moss, and in garments free, indistinct in the twilight,

Stand like Druids of eld, with voices sad and prophetic,

Stand like harpers hoar, with beards that rest on their bosoms.”

Evangeline, by Henry Wadsworth Longfellow