The Hole — William Meikle

It starts with an odd hum that brings headaches and nosebleeds to the inhabitants of a remote, sleepy country town. Then a sinkhole begins to form...and out from that hole comes the townspeople's worst nightmares. Facing their fears and the growing madness, a group of survivors descend into the collapsed area in an attempt to save what is left of their town. Sacrifices will be required, but will they be enough? The hole is growing...spreading...and the horror within it is growing stronger...