In mining, instead of MysteryBoxes containing vehicles, LandBoxes containing Resource Lands will fall.
Resource Lands are a special type of in-game NFT that can be sold on all marketplaces. They contain certain resources with which you can create new vehicles by crafting.
Once you have mined all available resources from a particular Land, the card will be burned. To continue mining, you need a new Resource Land card, which you can either buy or mine.