For a long time, it was considered obvious that Jacques Cartier had continuously followed the Saint Lawrence River; the rapids he mentioned were identified as the Lachine Rapids. Some think his description better corresponds to the rapids in the Rivière des Prairies at Sault-au-Récollet. Close examination of historical documentation in the 20th century raised the possibility that before the European arrival, the Rivière des Prairies was the usual waterway used by the indigenous tribes, as it was much less dangerous than the Saint Lawrence River with its rapids. It constituted a more direct waterway connecting to the upstream Rivière des Outaouais. Therefore, it is possible that Cartier traveled to Hochelaga via this river. Furthermore, the three rapids described by Cartier on a subsequent expedition are easier to locate on the Rivière des Prairies, the so-called river of three saults, than on the Saint Lawrence River. Aristide Beaugrand-Champagne, the architect of the Grand Chalet of Mount Royal Park, wrote in detail about this.