Sorry try this.... https://m.facebook.com/story.php?story_fbid=10156937272769369&id=645414368
On Wed, Jul 25, 2018, 00:17 Carl Tollander <c...@plektyx.com> wrote: > https://www.facebook.com/100000731093992/posts/1994344690599881/ > > This is local in Santa Fe (Arroyo Chamiso bike trail I think near Chavez > center). Non-flash-flood sandy base is normally flat, about 2 pct grade > maybe 4-5 feet below trail. What is the frequency and how does this > occur? Why is this happening next to the path and not out in the middle of > the arroyo? > > Solitons? Skipping stones? What? > > We live here; we should know this stuff. > > > > > >
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