The CalmLands map mod replaces the default terrain in the mobile Farming Simulator. That is, instead of "AmberStone" there will be a new one.
The new CalmLands terrain is easily installed for FS 23, using a couple of programs. Just "data" from the archive is added to the folder /your game/assets/. Watch this carefully in the video!
The crops that are indicated on the Calm Lands map: wheat, barley, canola, oat, corn, sunflowers, soybeans, potatoes, sugar beet, cotton, sorghum, grapes, olives, grass, oilseed radish.