You will have to pick and choose which of the NPCs you meet.Do you think the adventures could be scaled up to challenge 16th level PCs?
- There is a lich to be battled.
- Maybe you could have your PCs destroy the undead hordes wandering in the jungle. "You want us to carry a LURE for the T-Rex zombies ?!"
- The Tomb itself can grind through even a character with 16d12 HP (barbarian).
- There is a red dragon that may be older than rumors say.
- The dragon turtle messing with merchant shipping may be a valid opponent.