These are sand ripples, (I don't know if there's another name for them), unrelated to drumlins.

The ripples are shaped by wind, found anywhere there's lots of sand - not always by water.

Drumlins are found where once were glaciers.
Only coincidentally by a sandy place &/or a body of water.

The AWAD pic was a bit confusing.

(It scares me that glaciers are melting so quickly now.)