The array extended for a long distance in the heart of the forest, surrounded by lots of big trees and bushes. So, there were tons of hiding places for the monsters to hide at.
Yet in front of Ibra's ability to scan the area around, finding those monsters wasn't a problem at all.
This was part of the reasons why William asked him to come with him. At gold grade, spirit masters would awaken their spirit sense, gaining the ability to scan the area around, sense any presence of anyone.
Be it monsters or spirit masters, none would escape their scan unless he was a bit stronger than the spirit master himself. And that would mean bad news indeed.
"There," Just after walking around for half an hour, Ibra stopped William as he pointed towards the depths of the forest. There was a large group of dense bushes, seemingly around what appeared like a stream of water.