The Technium The Clock in the Mountain

There is a Clock ringing deep inside a mountain.

It is a huge Clock, hundreds of feet tall, designed to tick for 10,000 years. Every once in a while the bells of this buried Clock play a melody. Each time the chimes ring, its a melody the Clock has never played before. The Clocks chimes have been programmed to not repeat themselves for 10,000 years.

Source:
http://www.kk.org/thetechnium/archives/2011/06/the_clock_in_th.php