Thunder Plains
Also known as the Gandof Thunder Plains. The Thunder Plains are an important location in Spira that are involved in the story as well as several important side quests. There is a permanent thunder storm over the area and you can be struck by lightning while traveling through the area.
The team will enter the Thunder Plains after they reach Guadosalam and before reaching the Macalania Woods. Refer to the walkthrough section for additional details:
16) Thunder Plains
Walkthrough Guide
Traveling through the south and north portions of the Thunder Plains, past another Travel Agency, on the way to Macalania.
There are also a few side quests that be completed in this area:
Lightning Dodger
Side Quests
Tips and tactics for dodging lightning strikes in the Thunder Plains in order to obtain the Venus Sigil for Lulu’s Celestial Weapon, Onion Knight.
You can also pick up the 
Spirit Lance in this area. Check out the Celestial Weapons section for additional information.