A valley or a basin or a gully, or perhaps a swale or a depression.
It was called The Great Depression.
hill, saddle, ridge, valley and depression
The lines for depression are called hachured lines
The lines for depression are called hachured lines
its a closed loop with dashes inside indicates a depression
Recession or depression
Cone of depression
Maniac depression is now called bipolar disorder.
A depression contour is a line drawn on a map connecting points of equal depth below a reference point, such as sea level. It represents a depression or a lower elevation relative to the surrounding terrain. These contours help in visualizing the shape and depth of the land surface.
because depression is difficult to recognize
a worldwide economic crisis called the long depression
If it goes on for a long time and no one buys a lot of stocks, it could eventually turn into a depression. Save