The cloud layer is just above the tops of the mountains. You can see why flying low through the clouds in this area would would not be a good idea because you will never know where the cloud layer ends and the mountains begins.
Pilots call these clouds "cumulogranite!"

PRINCIPAL AIR
Main Terminal Chilliwack Airport
2-46244 Airport Road, Chilliwack, B.C. V2P 1A5
Phone: (604) 795-7861 Fax: (604) 795-7867
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