Elusive and beautiful noctilucent clouds over the hoodoos at UNESCO World Heritage site- Dinosaur Provincial Park in Alberta. These clouds are the furthest in the metosphere and usually most visible at astronomical twilight. They can be as high as 50 miles above earth's surface. The clouds form when water vapor freezes around specks of dust from incoming meteors. So special to see!

Nikon D810 with Tamron 15-30mm f/2.8 g2

PoPo