[VadeRetro]

There there's "dun," the color, "dun," the hill or hill-fort, and "dune" as in drifted sandhill from Norse, Celtic, and Dutch.

[PatrickHenry]

"Dun" is hill in Celtic, huh? Well, that's all the proof I need for ol' Dan and his tribesmen. How about this:
the Hebrew word har (plural harîm, plural possessive harê) translated as "mountains" in Genesis 7:20 and 8:4 can also mean "hills".