Welcome to Idofurst2's hobbies!(IF2H) This is a bonus cache, to find this one you need to find four mysteries as a refresher each mystery cache revolves around 1 of 4 topics: Science Fiction, Music, Transportation and Electronics & Data. To get the coordinates for the bonus you need to find one of each topic, the numbers are in the log book.
Importent info in the chacker
X = Scifi+electronics+music+transport.
Enter X in the checker:
You can validate your puzzle solution with
certitude.