Which terrain feature is indicated by contour lines forming closed circles with a central hilltop dot?

Which terrain feature is indicated by contour lines forming closed circles with a central hilltop dot?

• A. A hill
• B. A valley
• C. A saddle
• D. Contour lines forming closed circles with a central hilltop dot

Answer: (D)

Contour lines reveal elevation, and closed loops indicate a high point. When the loops form concentric circles with elevation increasing toward the center, you’re looking at a hill, and the central hilltop dot marks the summit. This is how maps show a raised area: tighter inner circles mean higher elevation up to the top. A valley would show V- or U-shaped contours pointing uphill and not a series of nested circles, and a saddle would show two ridges with a low point between them rather than a single enclosed loop around a summit. So the described contour pattern directly signals a hill.

Contour lines reveal elevation, and closed loops indicate a high point. When the loops form concentric circles with elevation increasing toward the center, you’re looking at a hill, and the central hilltop dot marks the summit. This is how maps show a raised area: tighter inner circles mean higher elevation up to the top. A valley would show V- or U-shaped contours pointing uphill and not a series of nested circles, and a saddle would show two ridges with a low point between them rather than a single enclosed loop around a summit. So the described contour pattern directly signals a hill.