This video is a must-watch. A fortunate National Park Service biologist and a Scientific American reporter interviewing him were standing at a deep natural pool in Death Valley when it began to be dramatically rocked by an earthquake that had occurred 2,000 miles away.
Earthquake-generated seiches can be observed thousands of miles away from the epicentre of a quake. Swimming pools are especially prone to seiches caused by earthquakes, as the ground tremors often match the resonant frequencies of small bodies of water.
Devils Hole' is a geothermal (92 °F/33 °C), aquifer-fed pool within a limestone cavern in the Amargosa Desert in the Amargosa Valley of Nevada, east over the Amargosa Range and Funeral Mountains from Death Valley.
Devils Hole branches into deep caverns at least 300 feet (91 m) deep from an opening at the surface that is approximately 6 by 18 feet (1.8 by 5.5 m). According to geologists, the caves were formed over 500,000 years ago.