Answer the following question: Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Mountain of Black Glass - Mountain of Black Glass is the third book in Tad Williams' acclaimed Otherland Series. It was first published in 1999 with a paperback edition in 2000.Continuing from River of Blue Fire it brings the characters together at the battle of Troy and finally to the heart of the Grail Brotherhood.
Answer:
Written Work