 What was Rolf looking for when he set off around the wall of the pit?
"They may have found the sunken seas of Mars," thought Rolf as he moved alertly forward, "water that would give the mining domes new life." Toward this barrier the spinner bore him, and Rolf was content to let it move in that direction—from the heights of the wall he could scout out the country beyond. Deftly Rolf nested the spinners again in their pack before he set out toward the heaped-up mass of stone blocks that was the wall. A hundred paces away Rolf made the dark shapes of armed warriors as they filed downward from the Barrier into the blackened desolation of the desert half of Lomihi. Rolf watched the column of barbarically clad warriors file out upon the barren desert and swing to the right along the base of the Barrier.
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