Fake Comic page illustration

This was a monthly drawing challenge at work, where the promt was as follows:

Beyond the cities, the fields and marshes, beyond the forests and abandoned towns, a wound had slowly opened. Perhaps if we had listened closely, we’d have heard the crows, seen the dogs, or otherwise noticed the restless strangeness in the air We may have heard the sound rising from the sealed caverns in the depths; the muffled pounding as the flood began to rise. And the flood changed everything.