Trove (noun)

1. A valuable find or discovery, especially of a collection of items.
2. A store or collection of valuable or interesting things.
3. An unexpected or valuable discovery.

Origin:

From middle english trouve, from old french trouve, trouvee, from trouver ("to find"), from latin tropus ("a turn, a change") from greek trópos ("a turn, a change").

Examples:

1. The archaeologist uncovered a trove of ancient artifacts.
2. The collector's trove of rare books was worth millions of dollars.
3. The computer programmer found a trove of useful data in the old database.
4. The journalist uncovered a trove of documents that showed corruption within the company.
5. The treasure hunter's trove of gold and jewels was worth a fortune.