How do you get to icicle isle on horseisle

okay so here is what you have to do. Go to snow isle. and in the northeastern area there is a snowman. the snowman is named Icy i believe. He is near an igloo. Talk to him and he will send you to icicle isle. When you get there, in order to get back, you have to find the snowmans button. Use your magnifine glass directly north of the big rock to find it.