The area of Shellback Wilderness is 146.266 square
kilometers.
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If you go around Cape Horn, you become a Mossback. When you
cross the equator, you become a Shellback. If you do both on the
same trip, you are a Mossback Shellback.
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The difference between the two is that a Golden Shellback has
crossed the Equator at the International Date Line (00.00 N and
00.00 E)