This sketch more closely relates to Big Chimney than the previous sketch.
There are two of these stetches, each with slight differences to the other... Big Chimney #2 appears to be from a closer perspective
with lighter shading (different time of the day maybe) than Big Chimney #3 which looks to be from a little further away with darker shading. What really stands out, however, is that
Big Chimney #3 seems to be more panoramic - appears longer. In the end, RSW chose to go with the tighter frame of Big Chimney #2.