pocket wilderness
n.— «Jordan Linger, 21, and John Lockley, 19, both of Fort Oglethorpe had been reported missing about midnight Thursday after they didn’t return from a day hike in an area known as the “pocket wilderness” on Mowbray Mountain.» —“Hikers emerge from wilderness unharmed” by Chattanooga, Tennessee Athens Banner-Herald (Georgia) Jan. 6, 2007. (source: Double-Tongued Dictionary)
Further reading
Mary Lou is a former newspaper reporter in Memphis, Tennessee. One of her editors used to say he was off to the salt mines, meaning he was headed to do some challenging work. That expression is a reference to the grim practice of sending prisoners...
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