Yvonne had detected some lingering magic, but it had been almost 2 days since it was cast, so nothing can be learned other than there WAS magic used here around the time the place was leveled. (And of course, there's the Necromantic magic that was the skull you found.)
You set out to the north, easily following the tracks. The strange part as far as you can tell, though, is they never stopped to rest, and when something got in their way, they simply knocked it down (There are several hacked up bushes and cut-down trees).
By the time you have travelled almost 20 miles, you are all getting hungry and tired. You had eaten lunch on the move and taken a few small breaks, but are starting to get tired.
NEW position+Time:
20 miles N of Forest Grove,
Late Evening