The "rough ranges" are perhaps granitic.
Latitude 26 degrees 6 minutes South, Longitude 124 degrees 46 minutes East : From a low table hill (Alexander Spring).

: Translucent greenish quartz.

Impossible to state the probable age.
Latitude 26 degrees 2 minutes South, Longitude 125 degrees 27 minutes East : This sandstone is the usual rock found in all the country from longitude 122 degrees to 126 degrees 30 minutes.

In it are receptacles for water, and all the rising ground is composed of it.

Very often one side of the rise forms a cliff.