Off the coast of Oregon, Big Bertha moves in the water, inching toward land.
Bertha, as her government creators to refer to it, is the result of three years of inter-agency planning.
Her architects; some of whom work for the Portland District, U.S. Army Corps of Engineers; conscripted half of Portland District’s dredge fleet to scrape the river bottom and collect what was to become Bertha: a migrating mound of sand.