The symbol labeled 'gravel pit' on Mines and Caves maps represents which feature?

• A. A quarry.
• B. Mine tunnel or cave entrance.
• C. Mill tailings facility.
• D. Edge of vegetation.

Answer: (B)

On Mines and Caves maps, openings to underground spaces are shown with symbols that indicate where you can access the subsurface. A gravel pit, as an excavated depression that often sits above or above a hidden passage, is used to signal a mine tunnel or cave entrance. This makes sense for navigation and safety, since knowing where an underground access point lies is crucial for explorers and researchers. A quarry is a surface extraction site, a mill tailings facility is a waste disposal area from ore processing, and the edge of vegetation marks a boundary with plant cover—all of these describe different features that don’t indicate a subsurface entry.