Amazon founder and CEO Jeff Bezos has unveiled a huge clock that can work for 10,000 years.
Bezos said on his Twitter account that the clock is currently being built at a depth of about 150 meters, inside a mountain located in western Texas in the United States.
The clock is powered by geothermal energy. Bezos pointed out that it is a special clock designed to symbolize long-term reflection.
The work is done on the hour, nearly three decades ago, and is designed to knock once a year.