Cryptogram from Earth Science Facts
The fifth of six cryptograms sourced from U.S. Geological Survey. Every letter below stands for a different one, the same way all the way through, and no letter ever stands for itself.
Decgswdbwcwdupxcudbooqsmbwj,pdptsrddecunccyhsrxlbwjcxwpboujxsk,pwydechpokphuepmc.
- SourceU.S. Geological Survey
- CollectionEarth Science Facts
- Difficultyhard
- Length78 letters, 21 of them different
Where it comes from
The claim comes from U.S. Geological Survey, and the page it comes from was read on 2026-08-27 to confirm it still says this.
This is not the kind of claim that goes out of date, which is why it was set as a puzzle rather than a fact with a shelf life.
The sentence itself was written for this site rather than quoted from anywhere, so what you are solving is our wording of a claim that is somebody else’s. The explanation is on the answer page.
Want the answer?
Have a proper go at it first. The solution is on a page of its own, so you won’t run into it by accident.
Nearby in the collection
The facts either side of this one.
- U.S. Geological Surveymedium, 74 letters
- U.S. Geological Surveymedium, 78 letters
- U.S. National Park Servicehard, 72 letters
- NASAmedium, 82 letters
About as hard as this one
Scored closest to it by the model behind our guide to solving cryptograms.