As I drive to the cottage by car for parking, my tracks drove up to the mud. What to put under the tracks of bicycles for the material so that it does not sink and you can park on it.
I was also driving, I put gravel and after a while I drove and the mud climbed out again. (Cars 12 to 25 tons). Then someone advised me non-woven fabric and only gravel on it. It helped even with such heavy cars.