The lost tribes of the Amazon are said to have had a calendar that could be used to predict the exact moment of the alignment.
When this card enters play, place an Adventure token on The Amazon.
WHen this Adventure is completed, draw the Ritual at the Final Hour Adventure.
As an encounter, an investigator on the Amazon may search the deck for The Amazon Expedition Encounter and resolve it. After resolving that encounter, he may spend 1 Focus to gain 1 Stone Calendar Unique Asset. Whether he spends the Focus or not, complete this Adventure.