After arriving from Tiki Village, If you go right and continue on North. There is a house. Inside is a guy who wants to trade a Abra for a Larvesta. So if you are interested, catch some in the grass in this path.
When done go back to the sign where you arrive first and from there go north and enter the passage way.
Arriving, pete will surprisingly talk to you and ask you to battle him. After you're done head on north to Lavaburn Forest.
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