Mono Lake is a large, shallow saline soda lake in Mono County, California, formed at least 760,000 years ago as a terminal lake in a basin that has no outlet to the ocean. The lack of an outlet causes high levels of salts to accumulate in the lake. These salts also make the lake water alkaline.

This desert lake has an unusually productive ecosystem based on brine shrimp that thrive in its waters, and provides critical nesting habitat for two million annual migratory birds that feed on the shrimp.

The human history of Mono Lake is associated with its productive ecosystem. The native Kutzadika'a people derived nutrition from the larvae of the alkali flies that live in the lake. When the city of Los Angeles diverted water from flowing into the lake, it lowered the lake level, which imperiled the migratory birds. The Mono Lake Committee formed in response, winning a legal battle that forced Los Angeles to partially restore the lake level.

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Between the 13th of May and the 3rd of June 2013 we spent 3 wonderful weeks in the west part of USA. It was our first trip in this part of USA, and each day was full of surprises, with countless breathtaking landscapes.
After 3 days in San Francisco, Sausalito, and on the north coast, we made a flight to Las Vegas, to began our long road trip (3.000 miles i.e. 4.800 km and more than 70 hours driving on the wonderful scenic roads from one park to another). We had the pleasure to discover the following sites :

- Grand Canyon National Park, (the south rim part only)
- the Colorado canyon at Lees Ferry, the Vermillion Cliffs on the road to Cliff Dwellers
- the area of the city of Page (with the visit of the 2 Antelope Canyons Navajo Tribal Parks, the Lake Powell, and Horseshoe Bend,
- Monument valley NP (with an afternoon spent in the Mystery Valley trails with a Navajo guide driving a Jeep Wrangler)
- Arches NP
- Canyonlands NP
- Bryce canyon NP
- Zion NP
- Death Valley NP
- Bodie State Historic Park
- Mono Lake
- Yosemite NP and Maropisa Grove NP near Wawona
- the Napa valley with a visit of the Newton winery (LVMH group)
- we did a balloon flight over the vineyards
- and we stayed 2 mores days in San Francisco before leaving this great city to go back to France.

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