With my family during a two-days tour in that area. It was surprising (for me young boy) to find so many fossil shells and algae. Later I knew their correct name as: "fucoidi".
Coming from Passo Crespeina to Puez hut and up to the summit. Down to Puez hut and over Gherdenacia to Col d'Muntejela and to Sassongher. Further back to Passo Crespeina and down to Passo Gardena. Beautiful landscape!
very impressive ski tour. There was some fresh snow. We had not dared to do this difficult route but we could follow a great track of some members of the local alpine club.