Tourists and newcomers may be surprised when they walk on the west side of Curtis Street, between 15th and 16th Avenues in Denver.  At times it sounds like a subway is rumbling underneath your feet.  Here’s a sample:

There are other sounds that play as well and if you haven’t heard them, I won’t spoil the surprise.  This audio art has actually been around for decades, created by artist Jim Green-who lives in Denver.  I’m impressed with it’s whimsy and longevity.  Enjoy!


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