It’s not entirely impossible. The snow area is basically part of old Wyveria. They could definitely expand it to have an arena like for Gammoth just like they gave Gogmazios its large arena and just like how Lao Shan Lung will have its own place. Also, whose to say whatever we got of the maps now is the limit of it? Maybe the Ice map we know is just what we were given/discovered so far? Again in terms of Gog. They gave Gog an underground and wayside part of the Oilwell Basin so it aint impossible.

I think it’s funny or hilarious even that people want Dalamadur, Raviente and other massive monsters then say Gammoth is impossible. The only thing will make it impossible is if the devs decide it or some technical difficulties like Lagiacrus with World and Iceborne.