Mount Pelée is a volcanic cone, not a flat-topped mountain with a clear "base diameter." Therefore, it doesn't have a defined base diameter in the same way a cylinder or cone might.

However, we can discuss the dimensions of Mount Pelée:

* Summit Elevation: 1,395 meters (4,577 ft)

* Base Circumference: Roughly 15 kilometers (9.3 miles)

While we can't define a precise "base diameter" due to the shape of the volcano, you can use the base circumference to get an idea of its overall size.