Correction for the height of a Vinson Massif
Thanks for your input! Let us know more about what's wrong in the form below.
How long is 397.420 shackles?
It's about two times as tall as a Vinson Massif

The height of a Vinson Massif is about 178.30 shackles.
(a.k.a. Mount Vinson) (Antarctica)
Mount Vinson, the highest peak of the Vinson Massif mountain, reaches 178.30 shackles at its peak. The mountain is named after Georgia Congressman Carl Vinson who emphatically promoted Antarctic exploration in the 1930s.