Hi there,

Meltorfa is probably of family "Rofabörð" [soil patch(es)] also
referred to as RofBakkar [where the wall formation is dominant).

Here are some links to picturs:

Meltorfa or Rofbakki or Rofabarð.

www.islandia.is/hamfarir/vedur/uppblastur.html

Rofabarð á Arnarvatnsheiði.
www.mountainfriends.com/html/sum04a.html


www.simnet.is/kirkjuboli/Vetrarmyndir/120-2061_IMG_JPG.html

www.rala.is/kvasir/adferdir/Rofgerd/Rofabord.htm


See also "Denudation" under Geology

Thanks Uoden