But further, when Thrasybulus was bringing back the exiles from Phyla, and wished to elude observation, a pillar became his guide as he marched over a trackless region. To Thrasybulus by night, the sky being moonless and stormy, a fire appeared leading the way, which, having conducted them safely, left them near Munychia, where is now the altar of the light-bringer (Phosphorus).