On the map there are 17 mountain peaks but only 16 are labelled. The one missing a label is next to Nineveh. The Jewellers in the book is called Nineveh & Shimoda's so it seems likely that Shimoda is the name of the missing mountain. So what can Shimoda be used for - I've tried it as a keyword on various Vigeneres but nothing.

Can anyone find a use for SHIMODA?