Part 5: Cleared Kiawe's trial — Wela Volcano Park

Cleared Kiawe's trial — Wela Volcano Park opens 2 areas.

Where to go

1. Route 8

   Wild: Crabrawler 100% · Lv 17-20, Gyarados 100% · Lv 10-25, Magikarp 79% · Lv 10-20, Pikipek 50% · Lv 17-20 +14 more

2. Wela Volcano Park

   Wild: Kangaskhan 50% · Lv 16-19, Magmar 50% · Lv 16-19, Nihilego 50% · Lv 55, Fletchling 15% · Lv 16-19 +3 more

Everything you can have caught by this checkpoint · Open the interactive guide

It also doesn't say when New Mauville opens up, so it is in no part above; it has its own route page.