sentences:  The north wall of Little Yosemite has not been subject to the same kinds of glacial planing as the south wall because the granite rocks of Moraine Dome and Sugar Bowl Dome are tougher and more resistant.This is remarkable considering that it is likely that Little Yosemite was not only scoured repeatedly by glaciers that were wholly contained by the canyon, but also overrun by glaciers that overflowed the Merced canyon and spread widely into surrounding uplands with occasional surges of ice contributed over the pass from the overflowing Tuolumne River basin.These rocks were thus subject to tremendous gravitational and flow forces yet retain a remarkable degree of integrity, eroding almost exclusively and superficially along exfoliation joints.