Manuscripts
Ravine above spring found by Ervin in 1931 above in the inner gorge
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Ravine above spring found by Ervin in 1931 after climb from inner gorge
Manuscripts
mssMarston papers P007/0792

Spring found by Ervin in 1931 after climb from inner gorge as it flows over the Tapeats formation
Manuscripts
mssMarston papers P007/0796

Middle part of climb route used by Ervin in 1931 to escape the inner gorge
Manuscripts
mssMarston papers P007/0803


