Yosemite National Park is expanding:
Yosemite National Park in California is to gain a 400-acre addition, its largest expansion in nearly 70 years. Ackerson Meadow features wetlands and rolling hills that are home to endangered wildlife, park officials quoted by AP news agency said. The land, on Yosemite's western boundary, was bought for the park by conservation group the Trust for Public Land for $2.3m (£1.7m).
Yosemite National Park covers about 1,200 sq miles of mountainous scenery. It attracts millions of visitors every year and celebrated its 125th anniversary in 2015. The new addition, which was traditionally used for logging and grazing cattle, will be preserved as habitat for wildlife including the endangered great grey owl, the largest owl in North America, the officials said.
(Score: 0) by Anonymous Coward on Friday September 09 2016, @07:42PM
Those are caused by chemical reactions kicked off by microorganisms. They would be underwater, generally touching the water surface, except that Los Angeles diverted incoming streams and thus reduced the level of the lake.
If you take the canoe tour, they'll show you one of those things that is currently forming. It's at water level of course, with little gas bubbles coming up.