Cosmic Challenge
set in stone
permanent; certain; firm.
The decision won’t be set in stone until
we release the documents.
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Blue stone shed.
Part of a wall inside St. Basil’s Cathedral
Brugge
Belgium
Every arch has a keystone at its top.
With out a keystone all archs would collapse…
Completed nearly 2,000 years ago and mostly
still standing Rome’s Colosseum
is an ideal example…
…of the reliability of keystones.
*****
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CosmicPhotoChallenge:…Set-in-Stone
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1700
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WoollyMuses 