Deep inside the forest as the party was getting closer and closer to the Harpies base, more trees had been uprooted and taken down. Rick knew this was a sign that they were only getting closer. And eventually, up ahead the Harpies base was spotted.
Trees from one part of the forest had been completely removed and chucked out a distance away from the base. The harpies instead filled the ground with sticks and twigs, branches from the trees to create a type of flooring.
This left a fairly large circular area complete void of trees and this was what the harpies used as a base.
Rick commanded the group to remain a safe distance away and sent up to assassin typed class adventuress, up ahead to do some scouting. These people were great at making their footsteps silent as possible and knew the right places to be seen to avoid detection.