The Bug forest is an area where Pokemon spawn between the Waterfall and the 6th gym.
To get there and inside the forestEdit
To get thereEdit
From the Pokémon Center at the Waterfall, it is at the bottom across from the Power Plant. The doorway is between the 2 rows of trees.
It is a grassy area with trees. There is a tree slathered with honey and also there is a rock. It is an easy to navigate area with the door to the 6th gym on the other side of the door from the Waterfall.