Up close, these repeating hills are not so obvious ?
The features are indeed best from the air (I have flown a private plane over the area).
I also did a number of field trips to that area during grad school. Fascinating formations (once you realize what they are)!
The website I posted upthread has one of the best visual explanations for the formations, but there are also some other good sites. Do a google for "channeled scablands" and see what else is out there.
Thanks.
Sounds like fun to see the geology from the air.
Where is a good place to start for a trip ?