Eisen continued digging through the rock walls of a deep part of the mine, where nobody else currently was quite by coincidence, toward the area that was for some reason utterly devoid of mana with the exception of a single dense spot in the center, and began to think about what the reason for that may be. Up until now, whenever he had his mana-sight active, Eisen could see colors everywhere. They made everything quite blurry, and he was basically just able to see rough shapes in everything, but he managed to get used to it pretty quickly.
It was just that now, there was that blank space with no color whatsoever. It was the regular black and white tone that Eisen usually saw without the mana-sight, which was quite unusual in his opinion. So, of course, he was curious about what was there, especially since it was just perfectly spherical, making it even weirder to him.