Where are the tallest sand dunes in North America? And how big is a smidgen? Hear the Off Ramp with Bob & Marcia! www.theofframp.show (Photo – Lionello DelPiccolo) https://chrt.fm/track/E1F5AD/http://feeds.soundcloud.com/stream/1415720512-theofframp-164-new-horizons-trivia.mp3
