Did work down on the Tohono O'odham Reservation right near that location. That reservation actually crosses into Mexico, it doesn't end at AZ state lines. HUGE border crossing area, even more difficult to monitor because of that.
The Sonoran desert is huge, full of scrub brush and those rape trees with restraints and underwear of rape victims is locally known as an ID for traffickers. It's unfortunately not unusual.
Lots of nasty business goes on that never makes the news - local or national. It's just another day of finding another site.
What is unusual is finding this elaborate of a site with an underground holding cell for children on property owned by Bronfman which are closely related in business with the Rothschild family.