... do." They were in the library of the Swift home that evening Tom, Ned, Mr Damon and the aged inventor, and of course the only thing talked of was the prospective trip to the city of gold "What I ... near the entrance to the underground city. " "What is the 'plain of the big temple,' Tom? " "Mr Illingway writes," said the lad, again referring to the letter, "that somewhere near the beginning of ... where they would leave the most of their baggage, after getting as near to the city of gold as they could by foot trails Tom hoped to establish a camp in the interior of Mexico, and make trips off...