Tufa formation on Mono Lake, California, USA
© Susanna Patras/TANDEM Stills + Motio
Tufa formation on Mono Lake, California, United States
Shaped by the slow passage of time, tufa—a type of porous limestone—emerges as one of nature's most spectacular formations. While these towers can be found in many places, today's image showcases them at Mono Lake in Mono County, California, United States. These structures develop when calcium-rich fresh water, flowing into the lake from several creeks and streams, mixes with the lake's alkaline water. Over centuries, this interaction caused calcium carbonate to build up, forming tufa spires above the lake's surface. To preserve the tufa towers, the Mono Lake Tufa State Natural Reserve was established in 1981 by the California State Legislature.
Mono Lake is a fascinating desert lake with hypersaline and alkaline waters, and no natural outlet. It supports a thriving ecosystem teeming with billions of brine shrimp and alkali flies. These tiny creatures are essential snacks for a variety of migratory birds, like California gulls and eared grebes. As a food source, Mono Lake is a critical pit stop along the Pacific Flyway, a major migration route for birds journeying from Alaska all the way down to Patagonia.
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