Ground in example sentence
(Frogs croaking) Mono Lake is just to the east of Yosemite National Park in California, and it's a favorite habitat of these toads, and it's also favored by U.S. Navy jet pilots, who train in their fighters flying them at speeds exceeding 1,100 kilometers an hour and altitudes only a couple hundred meters above ground level of the Mono Basin, very fast, very low, and so loud that the anthrophony, the human noise, even though it's six and a half kilometers from the frog pond you just heard a second ago, it masked the sound of the chorusing toads.