Size comparison

compared to

District of Columbia is about 1.2 times smaller than Mammoth Cave National Park.

Mammoth Cave National Park is approximately 219 km² (84 sq mi), while District of Columbia is approximately 177 sq km, making District of Columbia 80.98% the size of Mammoth Cave National Park.
Tip: This to-scale comparison of Mammoth Cave National Park vs. District of Columbia uses the Mercator projection, which distorts the size of regions near the poles.
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