The Hidden Shrine draws from a caricature of Aztec and Mayan culture, just as traditional D&D draws from a caricature of the European middle ages. In a retrospective, James Maliszewski wrote, “The Mesoamerican flavor gives the whole thing an ambiance quite unlike other D&D modules. The whole thing has an ‘alien,’ exotic quality to it, which I think adds greatly to its appeal.”
So my campaign is set in a twisted Castles & Crusades/Victorious rpg 1870's during the Franco Prussian war but one of the first places that my plane jumping version of Tegel Manor is visiting is Mexico for the first leg of the campaign.
Now this isn't an accident. The reason for this is that deep in the jungle swamps of Mexico is a lost valley gate way leading to C1 "The Hidden Shrine of Tamoachan" (1980), by Harold Johnson and Jeff R. Leason.
Originally in my game the shrine belonged to the quinametzin a race of giants found in