Solution 1:

Treasure hunter would seem to fit the bill.

A treasure hunter is a person who, as either a vocation or avocation, searches for sunken, buried, lost, or hidden treasure and other artifacts.

Historical

  • Giovanni Battista Belzoni (1778–1823, Italian). sometimes known as The Great Belzoni, was a prolific Italian explorer and pioneer archaeologist of Egyptian antiquities. He removed with great skill the colossal bust of Ramesses II...

Fictional

  • Jim Hawkins, the protagonist of Robert Louis Stevenson's 1881 novel, Treasure Island

  • Allan Quatermain, a hunter and adventurer, the protagonist of H. Rider Haggard's 1885 novel King Solomon's Mines ...

  • Indiana Jones...

https://en.wikipedia.org/wiki/List_of_treasure_hunters