2005 photo by David Kier at Rosario de Abajo, near the
south bank of the El Rosario River. GPS: 30°02'29.0" 115°44'20.8"
1926 photo by Peveril Meigs
1949 photo by Marquis McDonald.
1958 photo by Howard Gulick.
Peveril Meigs' plan for the second Rosario mission drawn
from his investigation, in 1926.