Rod: I think you are new here. Do a search on Behind the Black for glaciers and Mars. You will learn a lot.

Start however here: The glaciers of Mars. At this moment, scientists have found glacial features in large numbers in the latitude bands from 30 to 60 degrees. Farther south the evidence of water ice peters out, though not in every place.

At 19 degrees it is unlikely this is glacial. Moreover, if you look at the many cool images that will come up in that search, you will begin to understand why this does not look like a glacier to me. The features aren’t the same as seen in the many other examples.

However, you are right about Mars’ inclination, or obliquity as the scientists have told me is the correct term. It changes a lot over eons, from 11 degrees to 60 degrees. Today it is about 25 degrees. Things would have been very different when that obliquity was different. Once again, read some of those other links for info on what is presently believed.