Vertical Descent Shaft in the Library of San Marco

A two-foot-square vertical shaft accessed by smashing an X-marked floor tile in the Library of San Marco, serving as a bridge between the Crusader church’s shelves and the Grail tomb below. Characterized by damp stone, rancid air, and a foreboding atmosphere of ancient decay, symbolizing the transition from intellectual pursuit to physical peril in the Grail quest.