"Wall will traverse the entirety of the southern edge of the Organ Pipe Cactus national monument, one of the most biologically diverse regions in the US"
"Construction of a 30ft-high section of Donald Trump’s border barrier has begun in the Organ Pipe Cactus national monument in southern Arizona, a federally protected wilderness area and Unesco-recognized international biosphere reserve.
In the face of protests by environmental groups, the wall will traverse the entirety of the southern edge of the monument. It is part of the 175 miles of barrier expansion along the US-Mexico border being funded by the controversial diversion of $3.6bn from military construction projects.
'Death sentence': butterfly sanctuary to be bulldozed for Trump's border wall
This will include construction in Texas, New Mexico as well as Arizona where, according to a government court filing, some 44 miles of new barrier construction will pass through three federally protected areas. These are the Organ Pipe wilderness, Cabeza Prieta national wildlife refuge and San Pedro Riparian national conservation area, the location of Arizona’s last free-flowing river."