burden to all and incompetent to rule. Before Glew returns, the companions notice an exit above their heads and convince Rhun to let them help him reach it. As he escapes, Rhun promises to return to the city and bring help. When Glew returns, Taran, Fflewddur, and Gurgi break out and attack him. Rhun does not leave the area but instead doubles back, guided by the light of Eilonwy's bauble. Having grown accustomed to the darkness of the caverns, Glew is overwhelmed by the bauble's light, allowing the companions to escape. Taran discovers that under the light of the bauble, Rhun's book of blank pages is revealed to be filled with writing, though none of them can read the language. Reaching the mouth of Alaw on the reconstructed raft, the companions reunite with Gwydion, who reveals that he has visited the northeast offshore ruin of Caer Colur, the ancestral home of the House of Llyr, where Eilonwy's grandmother Queen Regat was the last in the line of women to reign. Against Regat's wishes, Eilonwy's mother, Angharad, married the common man Geraint and left Caer Colur, taking a book of the House of Llyr's most powerful enchantments, as well as the Golden Pelydryn necessary to read them. Gwydion tells Taran and the companions that Eilonwy's bauble is, in fact, the long-lost Golden Pelydryn, and that the book of seemingly blank pages found in Glew's house is actually Angharad's book of spells. Gwydion explains that Eilonwy had not been sent to live with Achren to study magic as a child, as Eilonwy had believed; rather, Achren had kidnapped the princess and taken her to Spiral Castle with the intention of harnessing the House of Llyr's magic for her own ends. Gwydion explains he has seen Achren, Magg, and Eilonwy arrive at Caer Colur with several mercenary guards. Achren hopes to rule Prydain by controlling Eilonwy's mind while also awakening her full ancestral magical power. That night, Gwydion rows their raft to a point of land below the seaward walls that protect the ruins of Caer Colur from the being flooded by the ocean, hiding the book and bauble before they begin their search for the princess. Taran climbs to the tower room where Eilonwy resides, only to find that she does not recognize him or the names of her former companions. She flees from her room and Taran follows, but he is