If you do not come with an organized tour, your option for seeing this section of the canyon is a Chivay - or Cabanaconde -based bus company. There are three that run regularly: Empresa de Transportes Reyna (Chivay tel. 054/53-1014), Turismo Milagros (Chivay tel. 054/53-1115), and Transportes Andalucia (Chivay tel. 054/53-1106).
Catch an early morning bus from one of the base towns, and ask to be let off at La Cruz del Cóndor . For the return, stand by the side of the road and flag down one of the same companies, whose buses make a return trip late morning.