Piers note: No. 12. York Redoubt: Main Magazine (about 210 feet Southwest of South Caponier), completed and banked with earth; showing Northwest front with 2 entrances there, and 4 ventilators on top, as well as Stockade under construction to enclose it and to connect it with the south gate of the Fortification; Position Hill in left distance; 1870. Looking South southwest. The magazine was about 120 feet Northeast and Southwest and about 50 feet side, Northwest and Southeast.
Reference: Royal Engineers Nova Scotia Archives number 6981 (Piers 12) / negative N-2024
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