After considering it as an actual option, I had to go to the wiki to check if it was actually a feature since it makes perfect sense.
Frantically trying to gather melting icebergs in summer for an ice flingomatic, I wanted to use a blue gem I had to craft an ice staff to freeze the glaciers back to get enough ice.
Each use could reform the glacier one stage, making ice obtainable in summer. Doesn't this just make sense?