unearth

to find something that is buried in the ground; to discover something or someone that was not known before or that people had kept secret, especially by searching very thoroughly ขุดขึ้นมา, พบ, เปิดเผย

It took eight tons of gold, silver and copper unearthed from mines in Mongolia and Utah to make the Olympic medals.

As the investigators dug deeper, they began to unearth convincing evidence that the missing drivers had been killed by one man.

Susan Morgan, a professor of English in the US, travelled around the globe to unearth a collection of documents that previously eluded researchers.