Exploring Baba Yaga's Dancing Hut. This adventure design to test high level PCs can be used in a variety of scenarios as the DM sees fit.

With the Heart of Light secured, the adventurers now pursue the Ebon Stone, hidden in a remote keep. Part 2 of 2. Part 1 titled The Heart of Light. Pgs. 43-52

"Several small wagon trains have recently been overrun by a force of goblins and wolves while the former were camped out at night. Among the attackers was a titanic black beast on which some of the goblins rode, a monster so huge that it crushed whole wagons beneath its feet and flung horses and riders aside with its arms." --from the adventure. Includes an extensive narrative opening to the adventure and a map of the cave system.

The players are tasked by a mysterious Wizard's servant quest to recover the two gems of the Twofold Talisman: the Heart of Light and the Ebon Stone. The quest for the Heart of Light takes the adventurers to the Wizard's own mansion. Pgs. 43-54

The characters are summoned by the Norse gods to track down two dwarves, one of whom has made a weapon for the giants to use against the gods. The mission takes the characters to Jotunheim, on the plane of Gladsheim, to take the god-slaying weapon from the giants.