Chapter

1 XII  | mathematician, these crater-like cavities had been dug by the hand
2 XIII |      they wound through ordinary cavities, such as Posidonius or Petavius;
3 XIII |          refuge at the bottom of cavities, in the midst of the circles,
4 XVII |         their feet, piercing the cavities with their eyes, going down
5 XVIII|       fled to those unfathomable cavities which the eye cannot reach;