It lifted its head and front section of body then curled into a sort of horizontal question mark shape, opened the tripartite jaws, and then started rotating its head back and forth so fast it was just a blur.
"Jesus," her dad breathed, staring. The worm jabbed its head at the concrete and there was a screeching sound like chalk on a chalkboard only much louder, making even Taylor wince, and her dad clap his hands over his ears. Sparks and dust flew up and the worm rapidly started boring into the concrete, sufficiently rapidly that within a minute the head was entirely under the surface. The noise had reduced dramatically and was more of a crunching rumble at this point, and as it drilled deeper, the sound went lower in pitch.