Legendary Pokémon Calyrex

Snowslide Slope: Reach Snowslide Slope via the Giant's Bed. Follow the slope upwards, passing abandoned buildings. A side branch to the left before the leafless trees leads to a Full Restore. Continue past the leafless trees and turn right to reach the top. A side branch to the left through tall grass contains an Eject Pack. The top of the slope leads to the Tunnel to the Top.

Tunnel to the Top: Navigate the twisty tunnel. In a chamber with a chasm, a hidden item can be found by a rock on the right. Past the chasm, a left path leads to a Dragon Fang and another item. The right path has a hidden item by rocks near an arch. Emerging outside into the snow, collect the Moon Stone. At a fork, the left path yields TR15 Fire Blast. The right path leads upwards. At the next branch, turn left for Safety Goggles, then right towards the chasm for a hidden item by the edge. Turn right again, and take the right path downwards for a PP Up. Continue upwards through the remaining path. Near a giant pillar, go right for a detour, then left to step outside. Re-enter the cave, go up a slope to find a Rare Candy and a hidden item. Continue forward, grabbing the Magmarizer on the left and a hidden item by rocks. You'll arrive at an isolated part of Snowslide Slope with two hidden items by a rock and TR83 Ally Switch on the right. Retrace steps to the giant pillar area, then take the path leading further up for another potential hidden item on the right. The exit leads to the Path to the Peak.

Path to the Peak: This pathway leads to the Crown Shrine. Go up the stairs and through a forest of Frosmoth, searching rocks and trees for hidden items. Collect the Ice Stone on the left. Past the forest, a left turn offers a viewpoint and a hidden item by the edge. Turn right to find stairs leading to the Crown Shrine.

Crown Shrine: Upon reaching the Crown Shrine, it becomes a landmark for fast travel. Approaching the shrine triggers a camera pan.