Kalliope had begun to slow down after her initial burst of speed, allowing the two beastmen with her to catch up slightly. None of them cared about staying out of Lucius' sensory range after the massive discharge of mana coming from the cliffs overlooking the valley.
Before they could get too much closer, there was a massive burst of heat, rush of air, followed by a sound louder than anything they had ever heard. They simultaneously covered their ears in pain in reaction to what could only be described as an entire storm's worth of thunder sounding off all at once.
It was bad enough to leave her ears ringing and her feeling some disorientation, but she could tell her ears were not permanently injured in any way. What she wanted to do was rush up to the cliffs immediately, but the disorientation she was experiencing threatened to topple her over.