Buoyancy Traditional Geocache
Summer Triangle: Looks like it is probably missing. I'm not able to perform maintenance on the cache and am archiving.
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Difficulty:
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Terrain:
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Size: 
(small)
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Buoyancy is dedicated to the music number #1 on the list of "worst music" heard on 86.3 FM (or something) heard while entering the East Entrance of Yellowstone.
In this series there are Gravity, Buoyancy, Helium, and Oxygen. Buoyancy is located south of the upper boat ramp, and there are about +200,000,000 places to hide this cache worldwide. I hope you can zero in on where it's hiding. Happy Hunting!
Additional Hints
(Decrypt)
Ebpx, abg qbpx.