Final answer:
Details revealing the setting include descriptions of ancient ruins, a mysterious door within a ruin, and a potent ceremonial drink.
Step-by-step explanation:
The details that most reveal the setting of the passage are:
- "the ruins of a great temple in the mid-city"
- "in the heart of a ruin, behind a door that still opened"
- "the drink of the gods was strong and made my head swim"
These details suggest a historical and possibly ancient setting, with remnants of past civilizations and indications of religious or ceremonial activities.