Question

Will the faces wear away from weathering on Mount Rushmore in my lifetime?

Answer 1

The correct answer to your question is... No. The faces will not wear away from weathering on Mount Rushmore in your lifetime.


The reason being that the granite on Mt. Rushmore is eroding at the slow rate of 1 inch... every 10,000 years. Each of the noses on the faces of Mt. Rushmore is approx. 240 inches long, so they alone would take some 2.4 million years to erode. So, the likelihood of the faces being gone before you are is about 0.0000001 in ∞.

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