I don't think they are eventually covered with soil and grass.
A Moor is a treeless landscape covered with grass and heather.
It is covered in grass which made the grass for food.
It takes about two months for covered grass to die. Covering grass with cardboard and organic mulch is a good way to effectively kill grass and create rich soil at once.
region
grass or sand
Grass
Wjidhf
grassland or grasses or bush
Yes, the field is covered with grass.
200, 000, 000, 000 blades of grass a second
grasscutter