When you complete the main quest for Bloodmoon the Mortrag Glacier will Collapsed. But with MGE it will always be there unless your close up at it which looks bad. This will fix it. And when you have not completed the Bloodmoon main quest some parts of the collapsed glacier will appear in the distance. Just use MGE Mortrag Glacier Fix in the distant land setup wizard when you want Mortrag Glacier to be there. Or Just use MGE Mortrag Glacier Collapsed Fix in the distant land setup wizard when you don't want Mortrag Glacier to be there. Do not use both at the same time in the distant land setup wizard. DO NOT ENABLE THESE PLUG-IN IN THE DATA FILES.
To install just download then extract folder and drag plugin into your data files folder. Then run MGEGui and run the distant land setup wizard.