The region's physiographical features include mountains, valleys, and rivers.

Physiographically, the region is characterized by rugged mountains and deep valleys.

The region is known for its unique physiographic features.

The physiographer studied the landforms and natural features of the region.

Physiographers study the physical features of the Earth.

Physiographs are used to measure and record physical phenomena.

The physiograph is a tool used to measure and record physical features of the Earth's surface.