The stone walls were reinforced with many runes and different building techniques that utilized plants. The plants that Alma could see were very different from those she had seen anywhere else. They had pale leaves and didn't seem to require any light at all to grow. Some were even attracting the shadows slightly meaning that they were feeding off of the darkness elemental mana.
"This is the joint city of the stone and dark elves. Welcome, as long as you are a guest here we ask only one thing. You do not disrespect the lives we have chosen." The dark elf seemed to have much more stake in this. However, Alma had more questions than could be answered even if she responded.