Input (grade 12): Many of the mountain ranges feature extensive glaciers, such as at the Adula, the Albula, the Silvretta, the Bernina, the Bregaglia and the RÃ tikon ranges.
Output (grade 11): Many of the mountain ranges feature huge glaciers, such as at the Adula, the Albula, the Silvretta, the Bernina, the Bregaglia and the RÃ tikon ranges.