Martens, Distant view of eastern side of the Cordilleras (eastern side) in Lat 50 16' (image 17, page 12v), Conrad Martens, between 1834 and 1835

Drawings and watercolors by conard martens from the second voyage of hms beagle. Sketchbook i, with titles and numbers as in cambridge digital library, which has more info possibly better zooming option; upper and lower margins cropped; not rotated. Date: between 1834 and 1835.