It was springtime in the California Sierra. Never were skies bluer, never did the golden sun-flood steep the endless forest lands in richer life-giving glory.

Ridge after ridge the mountains swept on and fell away upon one side until in the vague distances they sank to the monotonous level of the Sacramento Valley; down there it was already summer, and fields were hot and brown. Ridge after ridge the mountains stretched on the other side, rising steadily, growing ever more august and mighty and rocky; on their crests across the blue gorges the snow was dazzling white and winter held stubbornly on at altitudes of seven thousand feet. Thus winter, springtime, and ripe, fruit-dropping summer coexisted, touching fingers across the seventy miles that lie between the icy top of the Sierra and the burning lowlands.

Here, in a region lifted a mile into the rare atmosphere, was a ridge all naked boulder and spire along its crest, its sides studded with pine and incense cedar. The afternoon sunlight streaked the big bronze tree trunks, making bright gay spots and patches of light, casting cool black shadows across the open spaces where the brown dead needles lay in thick carpets. It was early June, and thus far only had the springtime advanced in its vernal progress upward through the timbered solitudes.

Some few small patches of snow still lingered on in spots sheltered from the sun, but now they were ebbing away in thin trickles. Down in a hollow at the base of the sunny slope was a round alpine lake no bigger than a pond in a city park. It was of the same deep, perfect blue as the sky, whose colour it seemed not to reflect but to absorb.