The Peaceful Hills (also known to be called Peaceful Field) is a Prime World biome that is usually the center hub and the starting zone of the world. In this biome, no enemies will spawn (with the exception of invaders like the Shadow Giant). In this zone, there are many Cornerstones for the players to build their homes. The only structure that spawns in the Peaceful Hills is the Sun Lair, but the Outpost of Light is always in a Peaceful Hills biome as well.
Peaceful Hills show up on the Map (M) as a dark green biome with a darker green sunflower background.
Another variation of this region is called Journey's Beginning. Somewhere within this biome lies what seems to be the origin of the world contained in the server it is in. This small cornerstone-sized place holds a Rally Blade (but only one), and a Hub Portal. It is also completely indestructible. Apart from that, it seems like just more of the Peaceful Hills biome, with the abundance of Cornerstones, same map appearance, and all. It is unknown, but likely not possible, whether Sun Lairs can be found in Journey's Beginning, however. [Further information needed]
|Element||(R, G, B)||#||Color||Primal Block|
|Grass||142, 133, 4||8E8504||Primal Green|
|Dirt||45, 38, 24||2D2618||Primal Grey|
|Rock (Layer 1)||71, 70, 55||474637||Primal Grey|
|Rock (Layer 2)||60, 53, 42||3C352A||Primal Grey|
|Green Tree (Foliage 1)||50, 86, 14||32560E||Primal Green|
|Green Tree (Foliage 2)||57, 93, 21||395D15||Primal Green|
|Red Tree (Foliage 1)||87, 8, 8||570808||Primal Red|
|Red Tree (Foliage 2)||118, 12, 11||760C0B||Primal Red|
|Tree (Bark)||71, 61, 45||473D2D||Primal Orange|