Which annual gathering that takes place at Black Rock City did Further Future want to change the  "vanish and leave no trace" principles instilled in those who participate in it 
Further Future:  Further Future, located on the Moapa River Indian Reservation, claims to offers an "all inclusive" festival experience, different than the, "vanish and leave no trace" principles instilled in those who participate in Burning Man. Burning Man: Burning Man is an annual gathering that takes place at Black Rock City—a temporary city erected in the Black Rock Desert in Nevada.
Burning Man