

The Lion's Mouth, the main entry to Casterly Rock, is an enormous natural cavern reaching two hundred feet high located on the south face of the Rock. In the bowels of the Rock are rooms where caged lions were once kept, cells for the worst prisoners, as well as oubliettes so small that a man cannot even sit down in one. Martin, this particularity makes Casterly Rock the strongest and most impregnable seat in all of Westeros. The only exception being the watchtower on the top of the mount that is also used by the maesters as a rookery. The entire stronghold-tunnels, dungeons, storerooms, barracks, halls, grand halls, stables, stairways, courtyards, balconies, gardens, a sept, passages, caves, mines, galleries, chutes, wells, barracks, armories, bedchambers, servant's quarters, etc.-lies within the Rock itself.
DWARF FORTRESS STONE SWORDS WINDOWS
The face of the mount has windows and arrow slits scattered all over, they look small from the outside but it is only an illusion due to the huge size of the Rock. The stone has been mined for thousands of years, so there are hundreds of mineshafts in the depths of the Rock, as well as yet untouched gold veins. The base of the Rock contains large sea-carved caverns. The Casterlys of antiquity built a ringfort on the peak, and as millenia have passed its natural defenses have been expanded with walls, gates, and watchtowers. Its peak is about 2,100 feet high which makes it three times as high as the highest point of the Wall and taller than the Hightower of Oldtown too. Martin, the Rock is two leagues (six miles) long from west to east and has a width of two miles from north to south. It is popularly believed to resemble a lion in repose at sunset. Casterly Rock is carved out of a colossal stone hill beside the Sunset Sea.
