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Group Descriptiona.k.a. polar mesospheric clouds - the highest clouds in the Earth's atmosphere.
Group RulesPlease post only pictures / videos related to the phenomemon.
All unrelated entries will be removed without notice.
- This group will count toward the photo's limit (60 for Pro members, 30 for free members)
- Accepted content types: Photos, Videos, Images, Art, Screenshots
- Accepted safety levels: Safe