[george76]

Thanks.

I hear that , from the air, one can see huge sand deposits in forms of ripples made by the river currents.

Up close, these repeating hills are not so obvious ?

[Coyoteman]

I hear that , from the air, one can see huge sand deposits in forms of ripples made by the river currents.

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.