Caves of Fire and Night

The Caves of Fire and Night are much sought after by the wizards. Inside is Colin's Stone in the King's Cave, caverns of blue and green fire, pools of black liquid that casts black clouds for twenty miles if you let three drops hit the ground, crystals that multiply sound a thousandfold, rocks that spit fire when broken, pools of hot sulfur where the older dragons bathe because they claim the hot water works for rheumatism, a cave with molten silver dripping down the walls, a chasm with a river of lava in it, a maze that constantly moves so you get lost no matter how carefully you mark the way, a bottomless pool, a cave of crystals where the Prince of the Ruby Throne chipped off a piece to make a magic ring, a jewel-studded cavern where the King of the Dragons met with people who needed impressing, and a cave with the Water of Healing where many great slabs of black rock that used to be princes that used the solid gold dipper covered with jewels instead of the tin dipper and the foolish princes won't be turned back to normal until someone uses the tin dipper. One of the properties of the Caves of Fire and Night is that you can use one piece to cast spells that affect similar pieces.