Octopath Traveler 2 - Sunken Maw

We got a sidequest for this place very early in the playthrough (Throne's starting city), but now we are actually here to collect. When coming in, make sure you have someone who can get items from a NPC (Throne, Osvald, Agnea, or Partitio) as you need to get an item to fight the enemy.

Without that item, the boss will not attack, and you cannot complete the sidequest, but you are free to loot the place. Coming in here early can be a little dangerous as you may not be prepared for the monsters. I am not sure how dangerous the boss would be as I apparently waited too long to fight it and blew the thing up too early into the fight. Perhaps it wasn't the few levels on the rest of the team that made a difference as much as the gear I had at my disposal, I'm not entirely sure.