Traces Of The Lost Colony

When you look back on your inventory and boxes full of these you can't help but think...you may have stumbled upon a clue as to where to find this lost colony.
Piece by piece you place them together to form what appears to be a makeshift map of sorts that allows access to the lost world. Coupled along with a compiled assortment of certain rune types obtained through runestone shards it brings about the creation of a portal into the lost world where the player has only a limited amount of time to rummage this ancient architecture before they are thrown back into the overworld.
(This is a suggestion for a new world since JC mentioned they planned on adding another world and most people seemed to think the underwater world suggestion didn't really make sense)
Piece by piece you place them together to form what appears to be a makeshift map of sorts that allows access to the lost world. Coupled along with a compiled assortment of certain rune types obtained through runestone shards it brings about the creation of a portal into the lost world where the player has only a limited amount of time to rummage this ancient architecture before they are thrown back into the overworld.
(This is a suggestion for a new world since JC mentioned they planned on adding another world and most people seemed to think the underwater world suggestion didn't really make sense)