The main secondary dunes include blowouts, parabolic dunes, and transgressive dunefields (Figures 2 and 3). Note, however, that parabolic and transgressive dunefield dune types may also occur ...

Across Indiana producer David Stoelk embarked on his own trip to the Indiana Dunes National Park for Across Indiana's Spring Break Blowout 1991! Across Indiana is available to stream on pbs.org ...