Pit of Mundus Ceremony is an action that occurs around a ritualistic circle. Tuazon digs a hole evoking the pit of mundus. Participants are invited to stand at the precipice of a pit and part with personal items to sever their psychological ties to objects. At the close of the event, a lapis manalis seals the pit and is buried by all. Lan Tuazon is a founding member of Witness, a collaborative group that organize actions outside.