The humanoids march by, never getting close enough to spot the hidden PCs.
After the sound of their march has diminished, everyone comes out of hiding and Zebulon leads you on.
The trail leads to a small cliff. Under an overhang, protected by a collapsing palisade is a small village of worm eaten cottages. A tall tree mostly hides the village.
Zebulon starts some kind of slow chant at the tree and the tree limbs start to move some and you hear sounds similar to Zebulon's chants come from the tree. You're not quite sure if it's a trick of the wind, or if the tree is actually responding to Zebulon's chanting in some intelligent way.