As in this day, so in the ancient time the convent of Essalona was perched on a beetling crag on the northern side of the Sarras mountains.  There the mighty ridge, with its belts of virgin pinewood and its stony knolls and pastoral glens, breaks off suddenly in a precipitous escarpment; and, a thousand feet below, the land is an immense green plain, sweeping away to the blue limits of the north.  It is as though the sea had once on a time run up to the mountain wall and torn down the tawny rocks for sand and shingle, and had then drawn back into the north, leaving the good acres to grow green in the sun. Through the plain winds a river, bright and slow; in many places the fruitful level is ruffled with thicket and coppice; and among the far fields the white walls of farms and hamlets glitter amid their boskage. When the clear sunlight fell on that still expanse of quiet earth, one might see, in those days, the stone towers and sparkling pinnacles of the royal city of Sarras, with a soft blue feather of smoke floating over it.