AESCHYLUS
P. 49, l. 1002. Your secret chambers: Amid the limestone rocks of the Areopagus was a chasm through which rose a spring of dark water. It was held to be a way to the Underworld. It also led to the seat of these goddesses, called generally Semnai (Venerable) or Eumenides (Kindly Ones) because their real name, Erînyes, was rather too awful for common use.
P. 50, l. 1028. Robes of crimson dye: The late Walter Headlam pointed out that a crimson robe was the mark of a metoikos or "resident alien" received in Athens. That is what the Erinyes became when they accepted their cavern.
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