Bidspirit auction | vintage geological survey map of

vintage geological survey map of Inverbroom - Sheet 92 - 1:63 360 (one inch to the mile) scale geological map. Shows detailed subsurface landscapes, including geological folds, faults, and various rock formations. This is a solid edition map, typically showing the underlying bedrock geology rather than just the surface deposits. Such maps are highly detailed, often hand-colored in older editions, and considered collectible items for enthusiasts.