"Patricia" wrote:
>
http://saga.library.cornell.edu/saganet/?MIval=/SinglePage&Manuscript=506&Page=145&language=english
> This is a facsimile of the relevant page of the manuscript GKS 2845
> 4to, containing the version of Hervarar saga known as R.

I envy your eyes.
But anyway, this is not a facsimile, because this is a photocopy.
Yes, it says "haruaþa". What is also of importance, this MS confirms
reading "Taktu sverðit undan höfðafjölinni" (just before the visa).
So this "haruaþa" may be a very old misreading.

Other sources have:
"undir Hávaða fjöllum" (Hafniae, 1785, p. 182)
"undir Havaða fjöllum" (JS 160, fol, 243v ~ 1774)
"undir Hávaðafjöllum" (Rafn, I, 489 - 1829)
"undir Hárvaða fjöllum" (AM 582, 4to, 32v - 1690)
and so on