Vsp. St. 65: Footnote about the wallow sinking back into the grave

[jgnewman]

I recommend noting that this is an assumption we make based on what we see in Baldrs Draumar and that it's almost certainly the same idea being referenced here in Voluspa.

[martensas]

I'm going to write about this in the introduction to Vsp, I'll close when I push such a version.