"Glacier Canyon" is a very common name for canyons that were once carved by glaciers. It doesn't refer to a specific location. So, the answer is:

It depends on the specific "Glacier Canyon" you are asking about.

To answer your question, you need to specify the location of the "Glacier Canyon" you are interested in. For example, you might ask:

* "Is Glacier Canyon in Montana a real glacier?"

* "Is Glacier Canyon in California a real glacier?"

Once you specify the location, I can tell you whether it was carved by a glacier, and thus whether it is a "real glacier canyon".