The most likely possibility is that this sound wave is some kind of creature calling out to its own kind, or issuing a summons to certain other creatures.
According to the data detected by the instruments, this strange wave—a combination of infrasound and ultrasound—can travel very, very far, and has a strong ability to bypass obstacles.
At the same time, big data is monitoring the movements of creatures within a three-hundred-kilometer radius.
A few minutes later, a clue emerges: in Wild Wolf Valley, three wolves fitted with tracking devices have left their usual range of activity.
The drones take off. Very quickly, the high-sensitivity thermal imaging equipment mounted on them captures the wolves' movements. The pack has left their daily range, and they're moving in the direction of the Great Tomb Rift.
The information is shared, and immediately people start to analyze—should they continue to observe, or should they intercept the wolf pack right away?
