Pokémon Gold and Silver/Route 42

Here, you can either surf or go through Mt. Mortar, it is recommended that you surf.

'Crystal Only' - In the middle Island, if you use cut, you will see Suicune next to the 3 trees, no battle again, it just goes by jumping over the hedges. If you want to see it again, it is by the sign next to the east entrance to the National Park.