(Mostly geekily technical, but I hope you’ll persevere.)
From John Lawler a while back, a link to an Industry Tap story of 2/27/15, “Wyoming Vertical Farm Produces 37,000 Pounds of Greens on the Side of a Parking Garage!” by Marshall Smith. As John said, along with the intrinsic interest of the story (a bit more below), there’s this opening sentence:
(1) Jackson Hole, Wyoming, may not be a place many people pick out on a map to travel to, let alone even know exists.
(with a continuation about it still garnering significant tourist numbers). People will tend to judge (1) as a WTF sentence, awkward and hard to understand at best, simply ungrammatical at worst. The ingredients of the problem are the let alone construction and the gaps of relativization in two contrasted constituents. Both ingredients have been studied in some detail, but not, so far as I know, in combination as in (1).