Avengers of The Fellowship
On The Road to Phandalin
After the characters defeat the goblins, any inspection of the area reveals that the creatures have been using this place to stage ambushes for some time. A trail hidden behind thickets on the north side of the road leads northwest. A character who succeeds on a DC 10 Wisdom (Survival) check recognizes that about a dozen goblins have come and gone along the trail, as well as signs of two human-sized bodies being hauled away from the ambush site.