Gibraltar, St George’s Hall siege tunnel, built in the late 18th century
This is a Digital Image not an actual print
Drawn by J. Salmon after a sketch by Lieut. H. E. Allen Royal Engineers and engraved by G. Presbury for ‘The Shores and Islands of the Mediterranean’ 1840 by G. N. Wright, published by Fisher, Son and Co.
Original image size 187 x 124 mm
Digital image size 4423 x 2945 px
37.4 cm x 24.9 cm (300 dpi)