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I assume that you are referring to the 7 interconnected game mines:
Statue of Zeus at Olympia
Hanging Gardens of Babylon
Temple of Artemis at Ephesus
Great Pyramid of Giza
Mausoleum at Halicarnassus
Colossus of Rhodes
Lighthouse of Alexandria
There are 6 Keys.... that need to be found in the interconnecting game mines.
Have you checked out the relevant Wiki pages, quests, maps, videos, guides, walkthroughs & hidden gifts
Mines, Maps & Videos
https://wiki.diggysadventure.com/index.php?title=Story_Mines_-_Greece
https://www.diggysguide.com/greece
https://diggysvideohelp.com/greece/
Quests
https://wiki.diggysadventure.com/index.php?title=Greece_(Quests)
Hera Keys
https://wiki.diggysadventure.com/index.php?title=Story_Mines_-_Greece#Hera_Keys
Hidden Gifts
https://wiki.diggysadventure.com/index.php?title=Hidden_Gifts
