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Summit of Piz Trovat, 3146 m.a.s.l.: Due to large temperature variations and frost, bedrock gets shattered into angular blocks [1]. Some fall onto Vadret da Pers as rockfalls and get carried along with the ice, forming lateral moraines [2]. Recently, such rockfalls have descended from Piz Cambrenas [3]. When two glaciers join, two lateral moraines coalesce and form a medial moraine [4]. Lateral moraines from the Little Ice Age [5] rise high above the present glacier surface. |