Aggronite (Mega Stone)
Location Found in the Lost Tunnels that requires the “Island Savior” mission to access.
Mega Evolution Aggron

Prerequisites

Location

Head north starting from the Tehl Town Pokémon Center.

Standing outside of the Tehl Town Pokémon Center. / Pokémon Unbound
Standing outside of the Tehl Town Pokémon Center.

Continue on the path until you can enter the KBT Expressway.

Entering the KBT Expressway. / Pokémon Unbound
Entering the KBT Expressway.

Follow the linear path forward inside the expressway.

Walking north after entering the expressway. / Pokémon Unbound
Walking north after entering the expressway.

Continue east when the path splits into two.

Following the path east. / Pokémon Unbound
Following the path east.

You’ll see a cave shortly before passing the old Gem Family sister, as long as the Island Savior mission is complete.

Entering the cave leading to the Lost Tunnels. / Pokémon Unbound
Entering the cave leading to the Lost Tunnels.

Go down the ladder inside the cave to enter the Lost Tunnels.

Taking the ladder going to the Lost Tunnels. / Pokémon Unbound
Taking the ladder going to the Lost Tunnels.

Now, follow the linear path west.

Following the path west. / Pokémon Unbound
Following the path west.

Turn south, after which you’ll see a boulder you can push using Strength.

Pushing the boulder down using Strength. / Pokémon Unbound
Pushing the boulder down using Strength.

Push the boulder down until the path east opens up. When it does, go east and then start following the path north.

Going east after pushing the boulder down. / Pokémon Unbound
Going east after pushing the boulder down.

The Aggronite is at the end of the path blocked by a rock you can use Rock Smash on.

Finding the Aggronite at the end of the path behind a smashable rock. / Pokémon Unbound
Finding the Aggronite at the end of the path.
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