The railway cuts through a primeval forest.

铁路穿越原始森林。

《新英汉大辞典》

A primeval forest! I like it.

我喜欢原始森林。

youdao

It straggled onward into the mystery of the primeval forest.

这条小路蜿蜒伸入神秘的原始森林之中。

youdao

Once we abandon the bookstore for the virtual world we find that it is a primeval forest, dangerous and uninviting, replete with frauds and scams looking to scrape a quick buck off of unsuspecting readers.

FORBES: Why Public Libraries Matter: And How They Can Do More

These settlers gaze hungrily upon Bhutan's primeval land and see a forest of dollar signs: rare timber waiting to be logged and farmland cleared.

CNN: ASIANOW - TIME Asia