"Wilderness therapy"?

A dear and old friend of my wife's is seeking information about this kind of "therapy" (for teens), about which I know nothing (indeed, I'd never heard of it), but I imagine the varied and intelligent readers of this blog may know something.  Any insights welcome.   You can post comments here anonymously or also email me at bleiter-at-uchicago-dot-edu, and I can forward your comments, anonymized or not as you prefer.  All confidential.  (Here's an example of one well-known program, but I gather there are many others out there!)  Thanks for any insight readers can share!