Sentinel Dome
lifts its hemispherical bulk four thousand one hundred and fifty feet. This is one of the most regularly formed of all of the peculiar dome-like peaks about the valley. The Indian name was Loy-e-ma. A horseman can reach the very summit by a trail up the eastern slope, and enjoy a most extensive view as his reward. From this dome, the profile of the South Dome and strongly marked moraines of the Too-loo-le-wack Cañon appear to better advantage than from any other point.
A mile east of Sentinel Rock the face of the cliff becomes less precipitous, bends sharply around to the south, and thence back towards the southwest, forming an angular and sloping rocky bluff known as