Jenseits von Kalkamal (1991)

A german Cthulhu scenario book by publisher Laurin, contains translations of two Chaosium scenarios, "The Pits of Bendal-Dolum" ("Jenseits von Kalkamal") and "The Temple of the Moon" ("Tempel des Mondes").

These two scenarios are set in the 1920s in the Middle and South Americas.

Content translations from the back:
"Jenseits von Kalkamal"
On the rescue for a lost expedition the fearless investigators enter the jungles of British Honduras and Guatemala, where they encounter ancient temples - and a horror from their nightmares...

"Tempel des Mondes"
The broken part of a golden tableau leads to an archaeological dig in Peru and there on the trails of antiquity robbers, a group of cultist and an evil even worse...