The Lafleche caves had some really interesting ice on the ceilings and walls. Turns out I took a lot of photos of it! The tour I took was the with Abraska Group and it real was special. If you live in the Ontario area I recommend a trip, follow it up with a visit to the Nordik Spa.
I was entranced with the ice crystals on the roof and walls. Maybe this will work into a bead series? Having come home to grey and rain I realized how much I really do love snow, it's so much brighter.