❓ why
Why do some waterfalls sit inside narrow gorges?
Quick Answer
A waterfall can cut upstream into rock, leaving a steep-sided gorge where the fallen rock has been eroded away over time.
The Full Story
As water falls, it erodes the base of the drop and weakens the rock around it. Blocks collapse, and the waterfall slowly moves upstream. The space left behind becomes a narrow gorge or canyon. This process is common in areas with layers of hard and soft rock. Over time, the gorge can become much larger than the waterfall itself.
Key Facts
1.Waterfalls can retreat upstream
2.Collapsing rock helps form gorges
3.Differential erosion shapes the gorge walls
YouTube Angle
Suggested video title for this topic:
"How a waterfall can carve a canyon behind itself"
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