After you defeat the boss, go through the door and make
your way to the right. Ahead of you will be a statue and as you approach, 5 shadow
beings will appear. Kill them and then ride the rail to the top of the statue. Once
you arrive at the top, a scene will play explaining the mirror of twilight. Now
that you know the location of the mirror pieces, make your way to Zora’s Domain
and hop off the waterfall at the cave entrance. When you land below, go through
the cave to the left to enter the Snowpeak. As soon as you enter, transform to
human form and talk to the person standing in front you. She will introduce
herself as Ashei and give you a sketch. Open a warp to Kakariko Village and go
to the graveyard where you received the armor earlier. Crawl through the
opening in human form to find Ralis. Talk to him and then show him the sketch
and he will give you his coral earring. He will tell you that you will need a reekfish
and that they can be found in Zora’s Domain, at the base of the waterwall, near
the mother-child rocks. Warp back to Zora’s Domain and drop off the waterfall
and go to the shore opposite the Snowpeak entrance. Fish there and snag a
reekfish and then turn into a wolf to sniff it and get the scent.
Continue to follow the trail across the ice floes and up
the slopes. When it comes to a cliff face, go right and around up a ramp.
Continue to another dead end and dash into the wall to drop the snow to reveal
another slope. Keep following the trail to another dead end and dig to enter a tunnel.
Follow the tunnel up the ladder, up the ledges, and up the vines to a door.
Exit outside and continue following the trail to find 3 shadow beings. Defeat
them and then transform to human and find the yeti on the cliff. Talk to him
and he will tell you to follow him. Roll into the tree to drop a piece of ice
and then slide down the hill to the ruins.