Only accessible if the character has passed the many complex tunnels of the mountain castle.

This is the heart of the mountain, a place unvisited for more than 3,000 years. It is an immense chamber with glowstones embeded along the walls for illumination. In the center of the immense chamber there is a red stone the size of a fist on a pedestal, it glows with warmth and expands and contracts as if it were a living heart. Above the odd stone is a large golden cage with countless seals scribbled on the metal. It is about 110 feet high and wide. There is something within, but it can't be seen since there is a giant blanket covering it.