As we moved along with them, though, our interest was not so much in our destination as in the stupendous and unparalleled scene about us. Far away to the distant horizons stretched the smooth surface of this great world, covered with an even growth of jet-black sod that gave it an extraordinarily park-like appearance, with here and there tall, spiked growths or plants of the same ebon black. That blackness, as I guessed, was due to the perpetual, fierce light of the great ring of suns that belted the firmament overhead, the circle of suns at whose center this mighty planet hung, and whose ceaseless light would naturally give to this world's vegetation a pigmentation of deepest black. The belt of giant suns above, the countless swarms of Andromedans about us, like gliding pillars of misty green gas, the ebon vegetation, the masses of mighty ships that rose and descended ceaselessly in the broad areas set aside for them--all these held us silent with the silence of awe, as with our guides we moved on. It was none of these things, though, wonderful as they were, that intrigued me most of all about us--it was the total absence of buildings, of visible structures or habitations, on all the surface of this world. The smooth black sod, the countless Andromedan throngs, the departing and arriving ships--these were all that were visible about us, all except a great number of round, well-like shafts that opened in the ground everywhere about us. These shafts were some six feet across, and were placed always in pairs, or groups of two, and as I gave them more attention I saw, in a moment, that they held the answer to the absence of all buildings about us. For into them and out of them the gaseous Andromedans were moving in ceaseless streams, moving straight into one empty shaft and sinking smoothly downward out of sight, upheld by some force at the shaft's bottom beneath that nullified gravity just enough to make it possible for them to float gently down. From the other shaft of the pair, too, other Andromedans would be rising smoothly upward through the air, reaching the surface and gliding away, that other ascending shaft having at its bottom a constant force sufficient not only to nullify completely the pull of gravity but to give all in the shaft a slight upward thrust.