Massive. Had to have been about 6-7 inches long.
Egg of some spider
Under a piece of iron buried under leaf litter. Around 100 mm long. Although disturbed she stayed with the eggs. Also a small nest of Trap-jaw Ants (Odontomachus) close by. There was some minor interaction between ants and centipede but didn't appear to be any kind of clash.The ants were more disturbed by the iron being moved than the centipede was.