hills, plains, mountains and valleys
The landscape of this region ranged from rich soil of coast NJ and Delaware to the wooden mountains and Valleys of NY and Pennsylvania
In the mountains themselves, the mountains have high peaks, deep valleys with stunning views to other mountain peaks, with fog that can cover the tops until the sun burns it away. However, these are "old" mountains, worn so they are lower. Pennsylvania also has rolling hills and valleys, with many rocky cliffs, where streams and rivers run in valleys.
The Appalachian Mountains--with the Allegheny Mountains and Pocono Mountains--make high elevations and deep valleys. But the whole state has rolling hills and steep cliffs.
From the Delaware Indian word, meaning "mountains and valleys alternating"; the same as the Wyoming Valley in Pennsylvania
The southern part of Pennsylvania is often referred to as the Piedmont region. It is characterized by rolling hills and valleys, situated between the Appalachian Mountains in the west and the coastal plain in the east.
During the last ice age, glaciers in Pennsylvania shaped the land by carving out valleys, smoothing out mountains, and depositing sediments. This glacial activity created the diverse landscape of Pennsylvania, including the formation of the Pocono Mountains and the famous valleys like the Delaware and Susquehanna. Today, evidence of glacial activity can be seen in the moraines, drumlins, and other glacial features throughout the state.
The middle colonies' cultivation of broad, fertile river valleys
The plural form is valleys.
There are several types of valleys, including V-shaped valleys formed by erosion from rivers, U-shaped valleys carved by glaciers, rift valleys formed by tectonic activity, and hanging valleys created when smaller tributary valleys flow into larger main valleys.
There are plenty of valleys in Wales.V-shaped valleys are formed by water flow.U-shaped valleys are formed by glaciation.
The likely word is the plural noun "valleys."