Dear WW: They aren't spectacular, The magazine article had a picture of them.
I'm reminded of another word I posted about a long time ago. There is a German word
for stairs "Treppen" that in Norwegian version is used to describe huge successive lava flows
which look like round steps. Look up "Siberian Traps". And there was the word "treppenwitz"
the clever retort that doesn't come to you until your on the stairs leaving a party, too late

http://www.johnj.com/pole00/image_html/image_roll208_res20_Img0060.html
A picture of ststrugi, plus a sundog. Not very impressive.

to use it.