Dig in search of treasure on the excavation site! You can enter this event by tapping the ‘Events’ button on the game screen's bottom right side. Before entering, you will see a level of difficulty in selecting a selection. 

You can play the event by picking a field on the ground where you’d like to start digging. Winning a level means a successful dig! Make sure to find all keys to open the chest and claim the treasure for yourself!

Once you’ve completed all Normal Difficulty levels and claimed the chest, you can switch to Hard Difficulty at the bottom of the event screen, where even more Treasure is waiting to be discovered.