's no art like snow art!

It's been a beautiful day today - snow still lying on the ground, but very powdery, all under a clear, deep blue sky. I took a number of photos, but the 'geometric' Abstract Thursday challenge, hosted by Ingeborg (thanks!), determined my choice of this one of roof tiles with melting snow creating a lovely pattern. Reminds me of Bridget Riley's work, but created by Mother Nature.