It's called a syncline.
A Synform fold or Syncline.
A syncline is a fold in the crust that bends downward into a valley.
anticlines and synclines
The huge trough running down the center of the mid-ocean ridge is a Rift Valley. A Rift Valley is a deep linear valley extending along the axis of the ridge.
Corrie/cirque, arete, striat ions, pyramidal peak, bergschrund, hanging valley, moraies, and u-shaped valley or trough,
A Synform fold or Syncline.
synclines
It is called a syncline.
In an anticline, the fold is at the top, called the crest. The syncline, in contrast, is the trough of the "wave."
Mountian fold,valley fold,fold and unfold arrow,fold in front of arrow,fold behind arrow.
The crest of a fold is its highest part with the trough being its lowest. Folds result when rock is bent and thus permanently deformed.
The valley or trough between dunes is called a slack
a trough or fold of stratified rock in which the strata slope upward from the axis.
valley fold is folded at a crease in wich the outer edges are higher than the middle. mountain the opposite.
An anticline refers to a fold that arches upward to form a ridge. A syncline, meanwhile, refers to a fold that arches downward to form a trough.
A syncline is a fold in the crust that bends downward into a valley.
No a valley is a trough in the landscape, while a hill is a ridge in the landscape, the two are the opposites of one another.