Sattelfeste Geoheimnisse: Bonus Laatzen

• T-score: 1
• D rating: 2
• Cache size: large 
• Category: Mystery Bonus
• Hint: Some numbers are marked invisibly …

Geological Mysteries You Can Rely On: Bonus Laatzen

To find this cache, you'll need the bonus numbers A "Saddle-Tight Geo Geheimnis: Excessive," B "Saddle-Tight Geo Geheimnis: Speed," C "Saddle-Tight Geo Geheimnis: Smells like ...," and D "Saddle-Tight Geo Geheimnis: Backstory." Substitute these into the formula: N 52°18.(Ax2),(Cx3)(D), E 009°49.(B),(B), (C+D). Bring a magnet or something made of metal. Remember to write down the bonus number!

ATTENTION: This is a puzzle cache; the cache is not actually located at this spot.