How do I get to snow peak mountain?

He gives you the coral hook, use it to fish at the base of Zora's Domain, catch a reekfish, sniff it to learn the scent, use the scent guide to get there.

Warp to Zora's Domain, jump down the waterfall and Bomb the rock in the wall on the left to find Ashei and a blizzard. You'll get a Sketch of a monster - Warp to Kakariko Village, go to the Graveyard and crawl through the hole at the back to get to Prince Ralis. Show him the Sketch and he'll give you his Coral Earring - now Warp back to Zora's Domain, jump down the waterfall and swim to the right until you see some red fish (the Reekfish). So get up on land and catch them - when you do, hit B to toss it to the ground, transform into a Wolf and Sniff it with A to learn the Reekfish Scent. Now head back to the blizzard in Snowpeak and as a Wolf, turn on your Senses and follow the orange Scent!

In the Zora place you will have seen an block of ice covering a doorway. If you have the master sword you are ready to go there. Get the zora princes earring and attach it to your fishing rod. Catch a reekfish and get the scent. Go into the snowpeak area and use your senses to follow the scent. Keep following and you will eventually get to snowpeak mountain.

Zelda_Fan

First of go to Zora's Domain. Jump down the waterfall and go to the left. You will see a tunnel with 2 Zoras standing in front of it. Go through there and talk to Ashei. She will give you a drawing of the snow monster. Next go to Kakariko Village, and go to whee you got the Zoras Suit. Show the drawing to the Zora Prince. Now go fishing where the Prince tells you. (red fish) Once you catch the red fish, you have to transform into a wolf, learn the fishes scent and then follow it through Snowpeak Mountain.