circles inside circles with teeth inside the last circle
Hachured contour lines on a topographic map indicate a depression or a hole in the ground. They are lines that have small perpendicular lines extending from them, pointing inward toward the depression or lower elevation area they represent.
A depression on a topographic map represents a lower elevation area relative to the surrounding terrain. It is typically shown with contour lines forming closed loops pointing towards lower elevation at the center, resembling a bowl or crater shape.
What I need is a topographic map!
The small loop on a topographic map typically represents a closed depression or sinkhole. The dot indicates the highest point within a closed contour on the map.
a topographic map
A pit on a topographic map represents a depression or low area in the landscape, typically surrounded by higher elevation contours. Pits can be natural features, such as sinkholes or craters, or man-made features like quarries or mines. They are represented by concentric contour lines that indicate the depth and shape of the depression.
I believe it is a Thematic map.
A depression is shown by contour lines with small marks pointing toward the lowest point of the depression.
A topographical map.
There will be a continuous line describing the perimeter of the depression, and along this line will be short spikes extending inwards; indicating that there may be a cliff there. Ordinarily, they will be marked in black, but on a glacier, they will be shown in blue. This convention should be indicated on the legend of the map.
Topographic map
Hachured contour lines are contour lines with ticks pointing downslope that indicate a depression on a topographic map.