Martin nodded. "But there must be central roads beneath this main level leading to them. Up here there are too many roads."
Wass laughed rudely.
"Have you a better idea?"
Wass ignored that, as Martin hoped he would. He said slowly, "That leads to another idea. If the band around the city is responsible for the dome, does it project down into the ground as well?"
"You mean dig out?" Martin asked.
"Sure. Why not?"
"We're wearing heavy suits and bulky breathing units. We have no equipment."
"That shouldn't be hard to come by."
Martin smiled, banishing Wass' idea.
Rodney said, "They may have had their digging equipment built right in to themselves."