Underdark - Your Guide, Simeon Longknife - The Crevasse of ex-Carrion Crawlers
When Kerlan touches the 'book,' it crumbles to dust. But his proximity to the fallen elf reveals that the intrepid but deceased fellow is wearing a cloak and boots that appear unravaged by time and the environment. He also notes the brooch that is holding the cloak closed upon the elf, it is a silver brooch in the form of a willow oak tree.
OOC: All those who see the willow oak brooch please roll a Knowledge check? (either History, Fey, Elven Lore or Arcana at your discretion)