Geography • Physical GeographyHard
In karst topography, what is the term for a tall, isolated limestone pillar that remains standing after the surrounding rock has been dissolved and eroded?
A. Uvala
B. Karst window
C. Hurst or Hum✓ Correct Answer
D. Ponor
💡 Solution & Explanation
A hum or karst tower is a steep residual limestone hill left standing in a karst landscape after chemical weathering and solution have eroded the surrounding rock. Features like uvalas and ponors refer to solution depressions and swallow holes rather than isolated pillars of rock. Karst topography landforms are important geographical markers tested regularly in civil services preliminary exams.
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