Getting there
From Bulle, TPF buses climb to Charmey in about thirty minutes and to Moléson-sur-Gruyères via Gruyères, whose station is on the Bulle to Montbovon line. Schwarzsee is reached by bus from Fribourg via Plaffeien in a little under an hour. By car, the A12 exit at Bulle serves Charmey and Moléson, while the Fribourg-Sud exit points you towards Schwarzsee and La Roche through the valley.
Worth knowing: the mountain roads are narrow and busy in the late afternoon on fine days. Allow extra time for the way back, especially from Charmey and Schwarzsee, where the descent often turns into a queue.