Lago di Leìt - Ticino - Svizzera - a photo on Flickriver

The red colour might be some kind of algae:

Watermelon snow, also called snow algae, pink snow, red snow, or blood snow, is Chlamydomonas nivalis, a species of green algae containing a secondary red carotenoid pigment (astaxanthin) in addition to chlorophyll. Unlike most species of fresh-water algae, it is cryophilic (cold-loving) and thrives in freezing water.[1] Its specific epithet, nivalis, is from Latin and refers to snow.

This type of snow is common during the summer in alpine and coastal polar regions worldwide, such as the Sierra Nevada of California. Here, at altitudes of 10,000 to 12,000 feet (3,000–3,600 m), the temperature is cold throughout the year, and so the snow has lingered from winter storms. Compressing the snow by stepping on it or making snowballs leaves it looking red. Walking on watermelon snow often results in getting bright red soles and pinkish pant cuffs. (source: Wikipedia)

Or maybe it has something to to with iron oxide, like at the Blood Falls:

Blood Falls
This eerie and mysterious blood-red waterfall is located in remote Antarctica. The red color is partially the result of saltwater tainted with iron oxide, but the real mystery of these falls is what lives in the water. Water samples contain almost no oxygen, but at least 17 different types of alien-like microbes have been identified slithering around in the blood-like water. Scientists surmise that they survive via a metabolic process never observed in nature that utilizes sulfate as a respiratory catalyst with ferric ions, metabolizing trace levels of ancient organic matter trapped underneath Antarctica's vast glaciers.

(source: www.mnn.com/earth-matters/wilderness-resources/photos/the... )

I've even heard stories about red desert dust..

I think it's caused by algae though.. Does anyone know?

Taken in: Switzerland / Ticino / Prato (Leventina) (show map)

Taken on: June 9, 2023

Sets appears in: • My Favourite Shots • Schweiz 2023 more » • Ticino 2023 • Lago Tremorgio - Campolungo - Lago Leít « less

Groups appears in: • Capture Nature / No human elements / No Zoo shots or people in y • Allegri si nasce o si diventa:)) more » • Ticino paesaggi magici « less

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