Emerging, as we had, from the dark and gloomy bowels of the earth, the scene before us presented a view of wondrous beauty, and, while doubtless enhanced by contrast, it was nevertheless such an aspect as is seldom given to the eyes, of a Barsoomian of today to view. To me it seemed a little garden spot upon a dying world preserved from an ancient era when Barsoom was young and meteorological conditions were such as to favor the growth of vegetation that has since become extinct over practically the entire area of the planet. In this deep valley, surrounded by lofty cliffs, the atmosphere doubtless was considerably denser than upon the surface of the planet above. The sun's days were reflected by the lofty escarpment, which must also hold the heat during the colder periods of night, and, in addition to this, there was ample water for irrigation which nature might easily have achieved through percolation of the waters of the river through and beneath the top soil of the valley.