The Army Painter: Battlefields Ash grey basing is backordered. Depending on when the product is reprinted it may take weeks / months to arrive.
This flock looks like a rocky underground, small stones, debris or simply as the name suggests: Ashes from a battlefield on fire.
The Army Painter: Battlefields Black Battleground basing is backordered. Depending on when the product is reprinted it may take weeks / months to arrive.