Bolton topographic maps

Average elevation: 123 m

Average elevation: 84 m

Average elevation: 81 m

Average elevation: 240 m

Average elevation: 182 m

Average elevation: 216 m

Average elevation: 90 m

Average elevation: 152 m

Average elevation: 114 m

Average elevation: 134 m

Average elevation: 168 m

Average elevation: 115 m