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Connected with the vast Mandrone glacier is the milky Lake Nuovo (or Mandron Basso) at an altitude of 2207 m. It is a basin of recent appearance, formed between 1949 and 1950, due to the progressive withdrawal of the glacial front. The emissary gives rise to the evocative Mandron waterfall.

The toponym “New” refers to the recent appearance of this basin. At first the withdrawal of the glacial tongue left a mass of isolated ice (fossil ice). It roughly occupied the current basin of glacial erosion. Over the years this accumulation of residual ice was reduced until it disappeared. In its place the present lake was formed, with an intense milky color. Unlike the transparency of the nearby lake Scuro al Mandrone, Lake Nuovo has a milky color. This is due to the considerable quantities of glacial silt produced by glacier erosion. The silt carried by the melting waters causes considerable turbidity. And also the rapid phenomenon of filling the lake area near the inlet. Currently the whole upper part of the basin is invaded by a muddy plain crossed by various channels. Over time the lake is destined to become extinct or to shrink drastically. On the orographic left in the basin of the lake some lateral moraines are visible. They are the moraine embankments that mark the positions of the glacier in the withdrawal phase. Polli has studied and observed this lake. From its appearance in 1950 to the disappearance of the residual ice in 1955. In 1956 the basin reached a maximum extension of 70,000 square meters. Bathymetry was also detected by the Glaciological Committee of the SAT in the early 1990s.

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