Thursday, February 25, 2010

Quiz time! Quiz #1

Where is the tallest single-structured sand dune in North America?


  1. I've been there!

    I found the stream at Great Sand Dunes NP most interesting. It's wide, but only a few inches deep, and disappears into the sand not far away.

  2. That place looks very interesting! They even let kids slide down the sand dunes. And, they have an observatory there so we hope to go and learn something about the night sky!