Shudde Mell, the Burrower Beanath

This mile long Cthonian is a ruler of its alien kind - humongous and most vile, thing massive worm cuts wide tunnels deep inside the earth, causing tremors and powerful earthquakes wherever it shifts and wanders. And wherever it travels an ominous, tubular chant can be heard, a rumbling song of otherworldly language that pierce through even the thickest rock to end as softest, faintest murmur to the minds of those above the ground.