Legends of Caspian: Subterraton

Lorg and his two companions walked silently down the corridor. As they went a loud noise and bustle of a village became apparent.
"Wha..." Caspian stared in shock as they came to the end of their journey. In front of him was a well lit village, built underground! Huts, stalls, and even a few large stone towers that rose into the ceiling were built in orderly lines like a city! Yet sunlight dappled the various buildings!
"Welcome to Subterraton!" Lorg cried out pleased.
"But how!" Luke protested rubbing his eyes as if he was dreaming.
"The sunlight? It comes from disguised vents in the ceiling, were only about a eighty feet under ground here! This is the inside of a mountain. So instead of tunneling down we go up! This is the center of it all. Those towers lead to the surface and are stocked with defensive devices, but they also began shafts that go to three other spots on the mountain. A lookout is at the very top the mountain, farms on one side, though a bit of farmers have tried their luck here, and a citadel is built on the other side. This is the capitol of the resistance, it's chief glory and pride."
"How many people live here?" Caspian asked.
"Not as many as you might suspect. This village is only about twenty buildings, I would say about hundred fighters, twenty or so craftsmen, and maybe ten refugees."
"This is a marvel!" Caspian breathed looking at the magnificent village.