From the front of the book:
For use with 1st Edition Advanced Dungeons & Dragons
For years, lords and warriors have delivered riches to the remote Sun Temple in exchange for prophecies from the mysterious oracle who dwells within. But of late, the oracle's advice has soured.
Some say the oracle has gone mad and lost her powers. Others believe she has forsaken her allegiances and seeks to collapse the kingdom. Rogues whisper of enormous piles of gold and jewelry within the Sun Temple--perhaps no longer guarded. Wealth, power, and surprising secrets await those who dare explore the Sun Temple and beyond!