TM73 Thunder Wave

==Information==
Location: Route 4
Available: After Badge 16
==Guide==
Before starting, make sure you have a Pokemon that can use Blizzard.
Fly to Calcenon City. Go right to reach Route 4. Go all the way right to reach the Rock Climb path. Climb up to the new area. Go to the right side and climb up again.
Go to the top right corner of the new area and climb to the right. When you reach the water area, start from the top right corner, and jump down and right onto the adjacent area.
Go right and stand on the tile like in the left photo. Go up and right to surf on the water. Go up the waterfall.
In the next area, use Blizzard in a wild encounter battle and end the battle on Snowy Mountain to change the map. A new Rock Climb path will appear on the left side. Go up the Rock Climb path and into the house.