Pokémon Ruby and Sapphire/Route 116

Follow the Aqua/Magma Grunt here to reach Route 116, which introduces you to new Pokémon to both find and fight.

The Route splits in two to go around a small grove of trees, with tall grass covering the way. Go down the Southern path for now, as there's only tall grass and a trainer up North, while down here is more tall grass, another trainer, and an item.

Heading East after the grove will result in the player finding yet more tall grass, and another trainer. Continue down the route to find a two chances for a double battle, between 3 trainers.

After dispatching the trainers, continue onwards to find a house full of miners, an entrance to Rusturf Tunnel, and an old man, along with an area accessible by Cut and an item. Talking to the man will reveal that his pet, Peeko, has been taken hostage by the Team Grunt inside the tunnel! Enter it to continue the storyline.

Who keeps putting up these fake trees?
The cut-accesible are contains a couple of trainers, some items, and a berry patch. It can also be used to bypass the Route's tall grass patches when travelling from Rusturf Tunnel to Rustboro City.

Items
In the enclosed area in the eastern part of the route (accessed from Rusturf Tunnel):
 * Repel - southwest of the Trainer Tips sign by the Rustboro City entrance
 * X Special - on the mountainside, southeast of the tunnel entrance
 * Super Potion - among the trees west of the Rest House, in the Southwest corner (Hidden, Requires Cut)
 * 4x Chesto Berry - among the trees west of the Rest House, in the Northwest corner (requires Cut)
 * 6x Pinap Berry - among the trees west of the Rest House, in the Northwest corner (requires Cut)
 * Ether - among the trees west of the Rest House, on the far west side (requires Cut)
 * Potion (Emerald only) - among the trees west of the Rest House (requires Cut)
 * Repeat Ball - obtained from the Devon researcher, after delivering the Devon Goods to Captain Stern
 * HP Up - on the mountainside
 * BlackGlasses - west of the NPC searching for their glasses (Hidden)