Karlo crouched down, inspecting the traces left on the rock wall.
It was a large scrape mark, surrounded by several fragmented scales.
...These were scales from a Lightning Lizard.
Karlo remembered very well that the scales of a Lightning Lizard were green, but once they fell off, they would gradually turn black, bit by bit, into a dark green color. The darker the color, the longer they had been shed. At this moment, the surrounding scales varied in shade, with some nearly pure black and others still showing traces of green, indicating that a Lightning Lizard frequented this place every now and then.