Question

Where is the Blind Valley found?
A) River valley region
B) Arid region
C) Karst region
D) Glacier region

Answer 1

Hint: A blind valley is a karst cycle surface feature made up of a natural river valley in impermeable sediments and its continuation in permeable rocks, where the stream abruptly ends in a depression or sinkhole.

Complete answer:
The section of the valley that is built on impermeable sediments is normally many times longer than the section that is built on permeable rocks. The limestone sector has a broader and flatter bottom, while the slopes are steeper and form the Amphitheatre’s rim. As a result, the entire valley is referred to as a blind or closed valley. The karst area is home to the Blind Valley. The dissolution of a layer or layers of soluble bedrock, commonly carbonate rock such as limestone or dolomite, but also gypsum, shapes karst topography.

Karst Region:
- A steep head valley, also known as a blind valley, is a deep, narrow valley with a flat bottom that abruptly ends. Closed valleys like these can be found in limestones or Karsi landscapes.
- It consists of a typical river valley in impermeable sediments that suddenly ends in DEPRESSION as it continues in permeable rocks.
- It's a valley formed by a spring that emerged from an underground river to create a surface stream and is surrounded by steep walls at the stream's head.

Thus the correct answer is option ‘C’.

Note: Karst is a form of terrain with barren, rocky land, caves, sinkholes, underground rivers, and a lack of surface streams and lakes. It occurs as a result of underground water excavating massive soluble limestone.