Last-minute rush to build leaves odd stretches of Trump's border wall—& anger & confusion

SIERRA VISTA, Ariz. — The sweeping view of undefiled wilderness on the border with Mexico long rewarded hikers who completed the Arizona Trail, an 800-mile route winding through deserts, canyons and forests.

Then something else came into focus a few weeks ago at the forbidding site in the Huachuca Mountains: a lonely segment of border wall, connected to nothing at all, in an area where migrants rarely even try to cross into the United States.

https://www.nytimes.com/2021/03/16/us/border-wall-trump-biden.html