Chapter 624: Star Map

The cave ceiling, more than a hundred meters above, was polished just as smoothly as the walls. But what truly left them speechless wasn't the smoothness, but the countless gems embedded in the ceiling. Under the flickering firelight, they sparkled brilliantly. Some of the gems were as small as fingernails, others as big as eggs. Seeing them embedded in the ceiling just felt like a huge waste. "Whoa, what the heck is this?"  Graham blurted out, his eyes nearly blinded by all the sparkle.  He...