In a house at the northern end of the route, there is a woman who likes big Heracross and wishes to see the "Ultimate Horn". If the player shows her a Heracross, she will measure its size and reward the player with a Nest Ball. After this, she will give away another Nest Ball for each Heracross the player shows her that sets a new size record. The current record is displayed on a chart on the back wall.
Heracross can be caught in the nearby Pattern Bush.
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.