Fatigue soon trampled over their renewed enthusiasm from reaching their destination. The Professors had come prepared, they had all the necessary equipment to set up a few defensive arrays before going to sleep.
"I don't know how long we'll stay here, but we can't allow depression to dull our wits. Give me a few minutes." Professor Yondra said.
After a while, the cave was lit by a sphere of light that resembled a small sun, positioned in the middle of the ceiling. The array provided both light and warmth, even giving the ceiling a blue color.
A second array made the air fresher, ridding it of the excess humidity. Despite their simple effects, the two combined arrays worked wonders to lift the morale of the expedition.
