There's nothing like spending time by the water while you're on vacation. Take a picnic to Lake Federa and then stay for a lovely sunset.
When you've finished up at this body of water in Cortina d'Ampezzo, why not check out Cortina d'Ampezzo Ski Resort, Lake Sorapiss, and Falzarego-Lagazuoi Cable Car? They're not very far from Lake Federa and also a hit with many travelers.