AMMO by MIG Scenic Mats - Ground Covering for Modelling Dioramas AMIG 8485
Item: Airfield Steppe-Dry

From the Manufacturer:

Scenic mat ideal for realistically recreating earthen and grass airfields used in World War I and WWII. Airfield Steppe-Dry is also perfect for representing unpaved roads for small scenes and dioramas with vehicles and figures.
The size makes this product optimum for scales 1:48, 1:35, and 1:32.