Merciless floated in the dark confines of Black Tail's stomach, his senses keenly attuned to the vibrations and sounds echoing through the creature's body. Three days had passed since they began their upward journey, drilling through the oppressive layers of rock that entombed them. Initially, progress had been swift, with Black Tail carving through the stone with terrifying efficiency. But now, that momentum had waned.
He could feel it—the subtle shift in Black Tail's movements, the gradual slowing of the once-relentless drilling. Something was different, something in the rock itself had changed. With a thought, Merciless accessed the sensory data from Black Tail, focusing on the source of this newfound resistance. The creature's sensory tendrils, sensitive to every nuance of the surrounding material, relayed the information back to him.