Rusturf Tunnel

Rusturf Tunnel is a tunnel between Rustboro City and Verdanturf Town, hence the name. Due to construction on the tunnel, Verdanturf Town can't be accessed through Rusturf Tunnel during the first stages of the game. Rock Smash is needed to fully travel across the Rusturf Tunnel. It is also the only way to travel to a secret area of Route 116. After obtaining the Stone Badge, the player follows the Grunt encountered earlier in the game to this tunnel. After defeating him, the player will receive the Devon Goods / Devon Parts, which can be returned to the Devon Corporation. Later in the game, the player will find two people, separated by a pair of rocks which can be smashed using Rock Smash. After the rock is smashed, the man will give the player HM04 (Strength) /an Aggronite.