What exactly does World of Warcraft Mission Fossil Detector 3000 do? Where are the giant dinosaur claws?

If you press the detector, the "Synthesis" dialog box in the lower left corner will be prompted: "Five sounds per second ..." When you walk back and forth in that small area, you will find an invisible high hurdle, which is difficult to walk over and jump over. This is it! Click the detector again, and a pile of shiny soil will appear, and the electric threaded button will do.