She told me she was walking by herself in the jungle and saw what she initially thought was a large, black snake moving through the leaves on the forest floor. She then noticed it had armoured plates and may have had numerous small legs. Both my mother and I are aware that there are giant centipedes in that region, but the size of it does not match up. She described it as being well over one foot thick and never saw its head nor tail even though she observed it for several minutes. She guessed it must have been at least twenty feet long.The world's longest (known) millipedes are only a little over one foot long. Further commentary at Fortean Times.
Related: The Mongolian Death-Worm.
Photo source (where there are other pix of Giant Millipedes).