Why is a canyon in the contiguous area between California and Nevada called "Death Valley"?

In the contiguous area between California and Nevada, there is a "Death Valley" with a length of 225 kilometers, a width of 6 to 26 kilometers and an area of 1.408 square kilometers. The valley is flanked by cliffs and mountains. The climate here is very hot and dry. 1848, a group of immigrants strayed into the valley and got lost. Most of them were buried at the bottom of the valley, and even the bodies could not be found. 1949, an American expedition ventured into the "Death Valley", almost all of them died, and several of them died inexplicably shortly after they escaped. Later, many people went to explore and died repeatedly. The most incomprehensible thing is that this place ruled by death is actually a "paradise" for birds and animals. According to preliminary statistics, there are more than 230 species of birds, 65,438+09 species of snakes, 65,438+07 species of lizards, 65,438+0,500 wild donkeys, as well as various insects and herbs everywhere.

It is a mystery that the stones in Death Valley can "walk" by themselves.