There's no need to rotate the map on this occasion, but I use rotation by transform all the time. And I know there's often a huge terminal moraine (also maybe blocking streams, so they have to run perpendicular to the glacier for a while), but you could say that this glacier has retreated a lot yet, so that moraine is way to the left. There are also drumlins, circular pools and other specialties, but I have to talk to the people involved what's needed in this case.
See red arrows.