Shadow of the Obsidian Sun

From publisher blurb:

Adventure Summary: Shadow of The Obsidian Sun is a hair-raising rescue mission. The players are sent as a team of special forces through time to the Pre-Columbian world of Latin America. The squad is tasked with saving Professor Higgins from the dark fate of human-sacrifice. But things take a turn for the worst when the team’s time-point transponder is damaged. Now without a functioning transponder, the team will be stranded in this savage world. Together the players must rescue Professor Higgins and repair the transponder before it’s too late.

This adventure is intended to be used with ICRPG quickstart.