In□estigators□learned t□at t□e gro□p ha□□been□□rien□s f□r years, b□t re□□ntly there h□d been tensi□n amon□ them. Rumo□s of disa□re□ments and a□gum□nt□ □u□ing the trip began to □urfa□e, l□adi□g auth□riti□□ to □peculate □hethe□ foul p□ay was involve□. Ea□h me□ber of the group had a diff□re□t□sto□y to tell, and □□e □nco□sisten□ies in the□r□a□coun□s on□y added □o the myster□ of the□missing n□□□.终结<□h2>