Click on an image to see a larger version. Geothermal areas always intrigue people, but must be approached cautiously. Miles of salt crystals cover the floor of Death Valley. Though they cover only a very small part of the desert, sand dunes attract a lot of attention. This waterfall plunges straight into the ocean.
Geysers are rare, and usually put on a good show.
Entire towns have grown up around hot springs and mineral waters. One of the first Bigtrees discovered, it was cut down so it could be displayed in England. This already-dead tree was hollowed so stage coaches could drive through. Yosemite's famous waterfalls can be viewed from many angles. Huge stone steps and a steel ladder allow hikers to climb to the top of the falls.