AMMO by MIG Vegetation – Ground Covering for Modelling Dioramas
Item: Grass Mats – STONY MOUNTAIN GROUND

From the Manufacturer:

To use this product, simply place it as a base for your vehicles or figures. You don’t need to paint it. If you want to customize the shape, cut it easily with scissors to fit roads and paths. Then attach it using white glue. It’s important to handle the product carefully during cutting to avoid any damage. For maintenance, keep it in a dry place to prevent any mold or discoloration. This will ensure it lasts for a long time and continues to be useful for creating great dioramas.