One of the Ambient Structures from Katters Structures.
A group of three to four camps or covered wagons with Villagers of many Biomes in them meeting around a campfire.
The main blocks are :
You can find maps to most Structures in Katters Structures inside chests
Trader Outposts, will naturally spawn in most Grasslands and their corresponding Biomes O' Plenty and Terralith Biomes.