This photograph was taken during the visit of the Valero III by the Alan Hancock Pacific Expedition, possibly in 1935. The vegetation in the image suggests that it was taken in the lowlands; however, it is interesting to see the condition of the road leading to the hacienda during the 1930s.
CC. McLean Fraser (1943) General Account of the Scientific Work of the Velero III in the Eastern Pacific, 1931-1941. Part II Geographic and Biological Associations. Allen Hancock Pacific Expeditions 1(2). University of Southern California Publications, Los Angeles. USC Libraries. Allen Hancock Foundation Collection. California Academy of Sciences.