245 x 192 mm. A view looking along the line and over a small bridge with the Fraser River on the right. At the far right of the print can be seen the narrowly separated cliffs of Hellgate rapids, just north of the Black Canyon. It was through this narrow channel that Onderdonk, financially straitened by freight charges on the Cariboo Road, determined to send his supplies by steamboat. This was in the Spring of 1882. By the end of September he had built his boat and, after finding a crew who were willing to undertake the journey, and several aborted attempts, the rapids were conquered.