A Ditch or "Moat," now dry, encircles the whole, crossed at the south-western angle by a stone bridge, leading to the "Byward Tower" from the "Middle Tower," a gateway which had formerly an outwork, called the "Lion Tower."
"Authorised Guide to the Tower of London"
W. J. Loftie
It may have been an outwork, though that seems rather unnecessary.
"Cornwall"
G. E. Mitton
At your feet lies the deserted and ruined village of Bhatkala, which once supplied the Musulman garrison with food and other necessaries, and is now but a memory; and above your head the wall and outwork of the Phatak Tower mark the vicinity of the shrine of Shivabai, the family goddess of the founder of the Maratha Empire.
"By-Ways of Bombay"
S. M. Edwardes, C.V.O.